Finding the Fourth Proportional to 1,612.22, 2,417.61 and 746.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.22 : 2,417.61 = 746.78 : x
2. Step 2: Convert to fraction form
   1,612.22/2,417.61 = 746.78/x
3. Step 3: Cross multiply
   1,612.22x = 2,417.61 × 746.78
4. Step 4: Simplify right side
   1,612.22x = 1,805,422.80
5. Step 5: Solve for x
   x = 1,805,422.80/1,612.22
6. Step 6: Final answer
   x = 1,119.84