Finding the Fourth Proportional to 2,429.07, 3,641.90 and 947.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.07 : 3,641.90 = 947.15 : x
2. Step 2: Convert to fraction form
   2,429.07/3,641.90 = 947.15/x
3. Step 3: Cross multiply
   2,429.07x = 3,641.90 × 947.15
4. Step 4: Simplify right side
   2,429.07x = 3,449,416.30
5. Step 5: Solve for x
   x = 3,449,416.30/2,429.07
6. Step 6: Final answer
   x = 1,420.06