Finding the Fourth Proportional to 1,425.25, 2,136.12 and 1,012.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.25 : 2,136.12 = 1,012.15 : x
2. Step 2: Convert to fraction form
   1,425.25/2,136.12 = 1,012.15/x
3. Step 3: Cross multiply
   1,425.25x = 2,136.12 × 1,012.15
4. Step 4: Simplify right side
   1,425.25x = 2,162,073.86
5. Step 5: Solve for x
   x = 2,162,073.86/1,425.25
6. Step 6: Final answer
   x = 1,516.98