Finding the Fourth Proportional to 3,142.40, 4,710.34 and 1,061.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,142.40 : 4,710.34 = 1,061.70 : x
2. Step 2: Convert to fraction form
   3,142.40/4,710.34 = 1,061.70/x
3. Step 3: Cross multiply
   3,142.40x = 4,710.34 × 1,061.70
4. Step 4: Simplify right side
   3,142.40x = 5,000,967.98
5. Step 5: Solve for x
   x = 5,000,967.98/3,142.40
6. Step 6: Final answer
   x = 1,591.45