Finding the Fourth Proportional to 1,565.98, 2,159.22 and 1,123.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565.98 : 2,159.22 = 1,123.72 : x
2. Step 2: Convert to fraction form
   1,565.98/2,159.22 = 1,123.72/x
3. Step 3: Cross multiply
   1,565.98x = 2,159.22 × 1,123.72
4. Step 4: Simplify right side
   1,565.98x = 2,426,358.70
5. Step 5: Solve for x
   x = 2,426,358.70/1,565.98
6. Step 6: Final answer
   x = 1,549.42