Finding the Fourth Proportional to 1,488.71, 2,234.88 and 1,429.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.71 : 2,234.88 = 1,429.98 : x
2. Step 2: Convert to fraction form
   1,488.71/2,234.88 = 1,429.98/x
3. Step 3: Cross multiply
   1,488.71x = 2,234.88 × 1,429.98
4. Step 4: Simplify right side
   1,488.71x = 3,195,833.70
5. Step 5: Solve for x
   x = 3,195,833.70/1,488.71
6. Step 6: Final answer
   x = 2,146.72