Finding the Fourth Proportional to 1,630.24, 2,249.60 and 931.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.24 : 2,249.60 = 931.52 : x
2. Step 2: Convert to fraction form
   1,630.24/2,249.60 = 931.52/x
3. Step 3: Cross multiply
   1,630.24x = 2,249.60 × 931.52
4. Step 4: Simplify right side
   1,630.24x = 2,095,547.39
5. Step 5: Solve for x
   x = 2,095,547.39/1,630.24
6. Step 6: Final answer
   x = 1,285.42