Finding the Fourth Proportional to 1,157, 1,594.72 and 877.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,157 : 1,594.72 = 877.15 : x
2. Step 2: Convert to fraction form
   1,157/1,594.72 = 877.15/x
3. Step 3: Cross multiply
   1,157x = 1,594.72 × 877.15
4. Step 4: Simplify right side
   1,157x = 1,398,796.29
5. Step 5: Solve for x
   x = 1,398,796.29/1,157
6. Step 6: Final answer
   x = 1,208.99