Finding the Fourth Proportional to 1,876.33, 2,587.89 and 1,129.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,876.33 : 2,587.89 = 1,129.51 : x
2. Step 2: Convert to fraction form
   1,876.33/2,587.89 = 1,129.51/x
3. Step 3: Cross multiply
   1,876.33x = 2,587.89 × 1,129.51
4. Step 4: Simplify right side
   1,876.33x = 2,923,041.16
5. Step 5: Solve for x
   x = 2,923,041.16/1,876.33
6. Step 6: Final answer
   x = 1,557.85