Finding the Fourth Proportional to 1,040,066.10, 1,557,766.35 and 853,442.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,040,066.10 : 1,557,766.35 = 853,442.10 : x
2. Step 2: Convert to fraction form
   1,040,066.10/1,557,766.35 = 853,442.10/x
3. Step 3: Cross multiply
   1,040,066.10x = 1,557,766.35 × 853,442.10
4. Step 4: Simplify right side
   1,040,066.10x = 1,329,463,385,053.34
5. Step 5: Solve for x
   x = 1,329,463,385,053.34/1,040,066.10
6. Step 6: Final answer
   x = 1,278,248.94