Finding the Fourth Proportional to 1,926.57, 2,658.61 and 1,087.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.57 : 2,658.61 = 1,087.25 : x
2. Step 2: Convert to fraction form
   1,926.57/2,658.61 = 1,087.25/x
3. Step 3: Cross multiply
   1,926.57x = 2,658.61 × 1,087.25
4. Step 4: Simplify right side
   1,926.57x = 2,890,561.79
5. Step 5: Solve for x
   x = 2,890,561.79/1,926.57
6. Step 6: Final answer
   x = 1,500.37