Finding the Fourth Proportional to 1,926.79, 2,658.81 and 1,087.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.79 : 2,658.81 = 1,087.45 : x
2. Step 2: Convert to fraction form
   1,926.79/2,658.81 = 1,087.45/x
3. Step 3: Cross multiply
   1,926.79x = 2,658.81 × 1,087.45
4. Step 4: Simplify right side
   1,926.79x = 2,891,322.93
5. Step 5: Solve for x
   x = 2,891,322.93/1,926.79
6. Step 6: Final answer
   x = 1,500.59