Finding the Fourth Proportional to 1,807.80, 2,713.32 and 942.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.80 : 2,713.32 = 942.72 : x
2. Step 2: Convert to fraction form
   1,807.80/2,713.32 = 942.72/x
3. Step 3: Cross multiply
   1,807.80x = 2,713.32 × 942.72
4. Step 4: Simplify right side
   1,807.80x = 2,557,901.03
5. Step 5: Solve for x
   x = 2,557,901.03/1,807.80
6. Step 6: Final answer
   x = 1,414.92