Finding the Fourth Proportional to 1,552.40, 2,141.78 and 1,434.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.40 : 2,141.78 = 1,434.52 : x
2. Step 2: Convert to fraction form
   1,552.40/2,141.78 = 1,434.52/x
3. Step 3: Cross multiply
   1,552.40x = 2,141.78 × 1,434.52
4. Step 4: Simplify right side
   1,552.40x = 3,072,426.25
5. Step 5: Solve for x
   x = 3,072,426.25/1,552.40
6. Step 6: Final answer
   x = 1,979.15