Finding the Fourth Proportional to 1,061,638.13, 1,465,077.32 and 578,202.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061,638.13 : 1,465,077.32 = 578,202.89 : x
2. Step 2: Convert to fraction form
   1,061,638.13/1,465,077.32 = 578,202.89/x
3. Step 3: Cross multiply
   1,061,638.13x = 1,465,077.32 × 578,202.89
4. Step 4: Simplify right side
   1,061,638.13x = 847,111,930,281.05
5. Step 5: Solve for x
   x = 847,111,930,281.05/1,061,638.13
6. Step 6: Final answer
   x = 797,929.08