Finding the Fourth Proportional to 1,876.81, 2,587.25 and 1,315.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,876.81 : 2,587.25 = 1,315.58 : x
2. Step 2: Convert to fraction form
   1,876.81/2,587.25 = 1,315.58/x
3. Step 3: Cross multiply
   1,876.81x = 2,587.25 × 1,315.58
4. Step 4: Simplify right side
   1,876.81x = 3,403,727.78
5. Step 5: Solve for x
   x = 3,403,727.78/1,876.81
6. Step 6: Final answer
   x = 1,813.58