Finding the Fourth Proportional to 1,527.69, 2,108.72 and 1,086.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,527.69 : 2,108.72 = 1,086.87 : x
2. Step 2: Convert to fraction form
   1,527.69/2,108.72 = 1,086.87/x
3. Step 3: Cross multiply
   1,527.69x = 2,108.72 × 1,086.87
4. Step 4: Simplify right side
   1,527.69x = 2,291,904.51
5. Step 5: Solve for x
   x = 2,291,904.51/1,527.69
6. Step 6: Final answer
   x = 1,500.24