Finding the Fourth Proportional to 1,323,089,304.34, 1,984,688,747.53 and 390,412,120.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,323,089,304.34 : 1,984,688,747.53 = 390,412,120.81 : x
2. Step 2: Convert to fraction form
   1,323,089,304.34/1,984,688,747.53 = 390,412,120.81/x
3. Step 3: Cross multiply
   1,323,089,304.34x = 1,984,688,747.53 × 390,412,120.81
4. Step 4: Simplify right side
   1,323,089,304.34x = 774,846,543,077,665,280
5. Step 5: Solve for x
   x = 774,846,543,077,665,280/1,323,089,304.34
6. Step 6: Final answer
   x = 585,634,348.74