Finding the Fourth Proportional to 1,145.18, 1,579.35 and 746.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.18 : 1,579.35 = 746.69 : x
2. Step 2: Convert to fraction form
   1,145.18/1,579.35 = 746.69/x
3. Step 3: Cross multiply
   1,145.18x = 1,579.35 × 746.69
4. Step 4: Simplify right side
   1,145.18x = 1,179,284.85
5. Step 5: Solve for x
   x = 1,179,284.85/1,145.18
6. Step 6: Final answer
   x = 1,029.78