Finding the Fourth Proportional to 1,434.55, 1,981.63 and 1,123.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.55 : 1,981.63 = 1,123.74 : x
2. Step 2: Convert to fraction form
   1,434.55/1,981.63 = 1,123.74/x
3. Step 3: Cross multiply
   1,434.55x = 1,981.63 × 1,123.74
4. Step 4: Simplify right side
   1,434.55x = 2,226,841.52
5. Step 5: Solve for x
   x = 2,226,841.52/1,434.55
6. Step 6: Final answer
   x = 1,552.30