Finding the Fourth Proportional to 2,631.53, 3,947.47 and 876.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,631.53 : 3,947.47 = 876.47 : x
2. Step 2: Convert to fraction form
   2,631.53/3,947.47 = 876.47/x
3. Step 3: Cross multiply
   2,631.53x = 3,947.47 × 876.47
4. Step 4: Simplify right side
   2,631.53x = 3,459,817.10
5. Step 5: Solve for x
   x = 3,459,817.10/2,631.53
6. Step 6: Final answer
   x = 1,314.75