Finding the Fourth Proportional to 2,520.00, 3,780.67 and 876.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,520.00 : 3,780.67 = 876.63 : x
2. Step 2: Convert to fraction form
   2,520.00/3,780.67 = 876.63/x
3. Step 3: Cross multiply
   2,520.00x = 3,780.67 × 876.63
4. Step 4: Simplify right side
   2,520.00x = 3,314,248.74
5. Step 5: Solve for x
   x = 3,314,248.74/2,520.00
6. Step 6: Final answer
   x = 1,315.18