Finding the Fourth Proportional to 915,615.30, 1,370,658.15 and 805,023.30

Step by Step Solution

1. Step 1: Write the proportion equation
   915,615.30 : 1,370,658.15 = 805,023.30 : x
2. Step 2: Convert to fraction form
   915,615.30/1,370,658.15 = 805,023.30/x
3. Step 3: Cross multiply
   915,615.30x = 1,370,658.15 × 805,023.30
4. Step 4: Simplify right side
   915,615.30x = 1,103,411,747,084.90
5. Step 5: Solve for x
   x = 1,103,411,747,084.90/915,615.30
6. Step 6: Final answer
   x = 1,205,104.09