Finding the Fourth Proportional to 2,895.20, 4,342.59 and 947.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,895.20 : 4,342.59 = 947.15 : x
2. Step 2: Convert to fraction form
   2,895.20/4,342.59 = 947.15/x
3. Step 3: Cross multiply
   2,895.20x = 4,342.59 × 947.15
4. Step 4: Simplify right side
   2,895.20x = 4,113,084.12
5. Step 5: Solve for x
   x = 4,113,084.12/2,895.20
6. Step 6: Final answer
   x = 1,420.66