Finding the Fourth Proportional to 2,686.62, 4,030.56 and 1,043.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,686.62 : 4,030.56 = 1,043.31 : x
2. Step 2: Convert to fraction form
   2,686.62/4,030.56 = 1,043.31/x
3. Step 3: Cross multiply
   2,686.62x = 4,030.56 × 1,043.31
4. Step 4: Simplify right side
   2,686.62x = 4,205,123.55
5. Step 5: Solve for x
   x = 4,205,123.55/2,686.62
6. Step 6: Final answer
   x = 1,565.21