Finding the Fourth Proportional to 1,243.60, 1,716.72 and 746.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.60 : 1,716.72 = 746.32 : x
2. Step 2: Convert to fraction form
   1,243.60/1,716.72 = 746.32/x
3. Step 3: Cross multiply
   1,243.60x = 1,716.72 × 746.32
4. Step 4: Simplify right side
   1,243.60x = 1,281,222.47
5. Step 5: Solve for x
   x = 1,281,222.47/1,243.60
6. Step 6: Final answer
   x = 1,030.25