Finding the Fourth Proportional to 1,926.65, 2,658.72 and 1,087.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.65 : 2,658.72 = 1,087.35 : x
2. Step 2: Convert to fraction form
   1,926.65/2,658.72 = 1,087.35/x
3. Step 3: Cross multiply
   1,926.65x = 2,658.72 × 1,087.35
4. Step 4: Simplify right side
   1,926.65x = 2,890,953.30
5. Step 5: Solve for x
   x = 2,890,953.30/1,926.65
6. Step 6: Final answer
   x = 1,500.51