Finding the Fourth Proportional to 900,734.34, 1,243,002.72 and 492,831.45

Step by Step Solution

1. Step 1: Write the proportion equation
   900,734.34 : 1,243,002.72 = 492,831.45 : x
2. Step 2: Convert to fraction form
   900,734.34/1,243,002.72 = 492,831.45/x
3. Step 3: Cross multiply
   900,734.34x = 1,243,002.72 × 492,831.45
4. Step 4: Simplify right side
   900,734.34x = 612,590,832,851.54
5. Step 5: Solve for x
   x = 612,590,832,851.54/900,734.34
6. Step 6: Final answer
   x = 680,101.56