Finding the Fourth Proportional to 1,425.88, 2,137.06 and 1,012.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.88 : 2,137.06 = 1,012.78 : x
2. Step 2: Convert to fraction form
   1,425.88/2,137.06 = 1,012.78/x
3. Step 3: Cross multiply
   1,425.88x = 2,137.06 × 1,012.78
4. Step 4: Simplify right side
   1,425.88x = 2,164,355.88
5. Step 5: Solve for x
   x = 2,164,355.88/1,425.88
6. Step 6: Final answer
   x = 1,517.91