Finding the Fourth Proportional to 1,425.52, 1,966.91 and 1,071.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.52 : 1,966.91 = 1,071.82 : x
2. Step 2: Convert to fraction form
   1,425.52/1,966.91 = 1,071.82/x
3. Step 3: Cross multiply
   1,425.52x = 1,966.91 × 1,071.82
4. Step 4: Simplify right side
   1,425.52x = 2,108,173.48
5. Step 5: Solve for x
   x = 2,108,173.48/1,425.52
6. Step 6: Final answer
   x = 1,478.88