Finding the Fourth Proportional to 2,333.90, 3,502.31 and 947.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.90 : 3,502.31 = 947.24 : x
2. Step 2: Convert to fraction form
   2,333.90/3,502.31 = 947.24/x
3. Step 3: Cross multiply
   2,333.90x = 3,502.31 × 947.24
4. Step 4: Simplify right side
   2,333.90x = 3,317,528.12
5. Step 5: Solve for x
   x = 3,317,528.12/2,333.90
6. Step 6: Final answer
   x = 1,421.46