Finding the Fourth Proportional to 1,575.53, 2,174.17 and 876.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.53 : 2,174.17 = 876.89 : x
2. Step 2: Convert to fraction form
   1,575.53/2,174.17 = 876.89/x
3. Step 3: Cross multiply
   1,575.53x = 2,174.17 × 876.89
4. Step 4: Simplify right side
   1,575.53x = 1,906,507.93
5. Step 5: Solve for x
   x = 1,906,507.93/1,575.53
6. Step 6: Final answer
   x = 1,210.07