Finding the Fourth Proportional to 1,475.58, 2,212.51 and 744.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,475.58 : 2,212.51 = 744.78 : x
2. Step 2: Convert to fraction form
   1,475.58/2,212.51 = 744.78/x
3. Step 3: Cross multiply
   1,475.58x = 2,212.51 × 744.78
4. Step 4: Simplify right side
   1,475.58x = 1,647,833.20
5. Step 5: Solve for x
   x = 1,647,833.20/1,475.58
6. Step 6: Final answer
   x = 1,116.74