Finding the Fourth Proportional to 2,386,663.55, 3,578,885.38 and 869,290.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,386,663.55 : 3,578,885.38 = 869,290.13 : x
2. Step 2: Convert to fraction form
   2,386,663.55/3,578,885.38 = 869,290.13/x
3. Step 3: Cross multiply
   2,386,663.55x = 3,578,885.38 × 869,290.13
4. Step 4: Simplify right side
   2,386,663.55x = 3,111,089,732,888.85
5. Step 5: Solve for x
   x = 3,111,089,732,888.85/2,386,663.55
6. Step 6: Final answer
   x = 1,303,530.92