Finding the Fourth Proportional to 1,434.10, 2,148.30 and 1,124.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.10 : 2,148.30 = 1,124.50 : x
2. Step 2: Convert to fraction form
   1,434.10/2,148.30 = 1,124.50/x
3. Step 3: Cross multiply
   1,434.10x = 2,148.30 × 1,124.50
4. Step 4: Simplify right side
   1,434.10x = 2,415,763.35
5. Step 5: Solve for x
   x = 2,415,763.35/1,434.10
6. Step 6: Final answer
   x = 1,684.52