Finding the Fourth Proportional to 1,005.60, 1,507.35 and 484.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005.60 : 1,507.35 = 484.82 : x
2. Step 2: Convert to fraction form
   1,005.60/1,507.35 = 484.82/x
3. Step 3: Cross multiply
   1,005.60x = 1,507.35 × 484.82
4. Step 4: Simplify right side
   1,005.60x = 730,785.89
5. Step 5: Solve for x
   x = 730,785.89/1,005.60
6. Step 6: Final answer
   x = 726.72