Finding the Fourth Proportional to 2,877.60, 4,315.59 and 902.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.60 : 4,315.59 = 902.82 : x
2. Step 2: Convert to fraction form
   2,877.60/4,315.59 = 902.82/x
3. Step 3: Cross multiply
   2,877.60x = 4,315.59 × 902.82
4. Step 4: Simplify right side
   2,877.60x = 3,896,200.96
5. Step 5: Solve for x
   x = 3,896,200.96/2,877.60
6. Step 6: Final answer
   x = 1,353.98