Finding the Fourth Proportional to 1,087.68, 1,498.25 and 1,007.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.68 : 1,498.25 = 1,007.94 : x
2. Step 2: Convert to fraction form
   1,087.68/1,498.25 = 1,007.94/x
3. Step 3: Cross multiply
   1,087.68x = 1,498.25 × 1,007.94
4. Step 4: Simplify right side
   1,087.68x = 1,510,146.11
5. Step 5: Solve for x
   x = 1,510,146.11/1,087.68
6. Step 6: Final answer
   x = 1,388.41