Finding the Fourth Proportional to 1,427,467.59, 1,969,901.28 and 815,810.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427,467.59 : 1,969,901.28 = 815,810.15 : x
2. Step 2: Convert to fraction form
   1,427,467.59/1,969,901.28 = 815,810.15/x
3. Step 3: Cross multiply
   1,427,467.59x = 1,969,901.28 × 815,810.15
4. Step 4: Simplify right side
   1,427,467.59x = 1,607,065,448,872.49
5. Step 5: Solve for x
   x = 1,607,065,448,872.49/1,427,467.59
6. Step 6: Final answer
   x = 1,125,815.72