Finding the Fourth Proportional to 1,569.78, 2,167.00 and 1,150.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,569.78 : 2,167.00 = 1,150.15 : x
2. Step 2: Convert to fraction form
   1,569.78/2,167.00 = 1,150.15/x
3. Step 3: Cross multiply
   1,569.78x = 2,167.00 × 1,150.15
4. Step 4: Simplify right side
   1,569.78x = 2,492,377.29
5. Step 5: Solve for x
   x = 2,492,377.29/1,569.78
6. Step 6: Final answer
   x = 1,587.72