Finding the Fourth Proportional to 1,164.15, 1,744.56 and 875.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,164.15 : 1,744.56 = 875.79 : x
2. Step 2: Convert to fraction form
   1,164.15/1,744.56 = 875.79/x
3. Step 3: Cross multiply
   1,164.15x = 1,744.56 × 875.79
4. Step 4: Simplify right side
   1,164.15x = 1,527,868.20
5. Step 5: Solve for x
   x = 1,527,868.20/1,164.15
6. Step 6: Final answer
   x = 1,312.43