Finding the Fourth Proportional to 1,882.48, 2,821.89 and 787.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,882.48 : 2,821.89 = 787.15 : x
2. Step 2: Convert to fraction form
   1,882.48/2,821.89 = 787.15/x
3. Step 3: Cross multiply
   1,882.48x = 2,821.89 × 787.15
4. Step 4: Simplify right side
   1,882.48x = 2,221,250.71
5. Step 5: Solve for x
   x = 2,221,250.71/1,882.48
6. Step 6: Final answer
   x = 1,179.96