Finding the Fourth Proportional to 1,493.28, 2,238.31 and 945.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,493.28 : 2,238.31 = 945.62 : x
2. Step 2: Convert to fraction form
   1,493.28/2,238.31 = 945.62/x
3. Step 3: Cross multiply
   1,493.28x = 2,238.31 × 945.62
4. Step 4: Simplify right side
   1,493.28x = 2,116,574.78
5. Step 5: Solve for x
   x = 2,116,574.78/1,493.28
6. Step 6: Final answer
   x = 1,417.40