Finding the Fourth Proportional to 1,474.71, 2,213.43 and 744.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,474.71 : 2,213.43 = 744.80 : x
2. Step 2: Convert to fraction form
   1,474.71/2,213.43 = 744.80/x
3. Step 3: Cross multiply
   1,474.71x = 2,213.43 × 744.80
4. Step 4: Simplify right side
   1,474.71x = 1,648,562.69
5. Step 5: Solve for x
   x = 1,648,562.69/1,474.71
6. Step 6: Final answer
   x = 1,117.89