Finding the Fourth Proportional to 1,630.56, 2,250.18 and 931.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,630.56 : 2,250.18 = 931.95 : x
2. Step 2: Convert to fraction form
   1,630.56/2,250.18 = 931.95/x
3. Step 3: Cross multiply
   1,630.56x = 2,250.18 × 931.95
4. Step 4: Simplify right side
   1,630.56x = 2,097,057.38
5. Step 5: Solve for x
   x = 2,097,057.38/1,630.56
6. Step 6: Final answer
   x = 1,286.09