Finding the Fourth Proportional to 1,103,287.89, 1,522,454.29 and 619,758.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103,287.89 : 1,522,454.29 = 619,758.60 : x
2. Step 2: Convert to fraction form
   1,103,287.89/1,522,454.29 = 619,758.60/x
3. Step 3: Cross multiply
   1,103,287.89x = 1,522,454.29 × 619,758.60
4. Step 4: Simplify right side
   1,103,287.89x = 943,554,139,334.39
5. Step 5: Solve for x
   x = 943,554,139,334.39/1,103,287.89
6. Step 6: Final answer
   x = 855,220.24