Finding the Fourth Proportional to 1,182.08, 1,631.20 and 684.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.08 : 1,631.20 = 684.72 : x
2. Step 2: Convert to fraction form
   1,182.08/1,631.20 = 684.72/x
3. Step 3: Cross multiply
   1,182.08x = 1,631.20 × 684.72
4. Step 4: Simplify right side
   1,182.08x = 1,116,915.26
5. Step 5: Solve for x
   x = 1,116,915.26/1,182.08
6. Step 6: Final answer
   x = 944.87