Finding the Fourth Proportional to 1,274,144.58, 1,909,884.15 and 475,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,274,144.58 : 1,909,884.15 = 475,078.50 : x
2. Step 2: Convert to fraction form
   1,274,144.58/1,909,884.15 = 475,078.50/x
3. Step 3: Cross multiply
   1,274,144.58x = 1,909,884.15 × 475,078.50
4. Step 4: Simplify right side
   1,274,144.58x = 907,344,897,155.78
5. Step 5: Solve for x
   x = 907,344,897,155.78/1,274,144.58
6. Step 6: Final answer
   x = 712,120.83