Finding the Fourth Proportional to 1,434.52, 1,978.38 and 1,102.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,434.52 : 1,978.38 = 1,102.36 : x
2. Step 2: Convert to fraction form
   1,434.52/1,978.38 = 1,102.36/x
3. Step 3: Cross multiply
   1,434.52x = 1,978.38 × 1,102.36
4. Step 4: Simplify right side
   1,434.52x = 2,180,886.98
5. Step 5: Solve for x
   x = 2,180,886.98/1,434.52
6. Step 6: Final answer
   x = 1,520.29