Finding the Fourth Proportional to 1,576.76, 2,175.72 and 947.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,576.76 : 2,175.72 = 947.16 : x
2. Step 2: Convert to fraction form
   1,576.76/2,175.72 = 947.16/x
3. Step 3: Cross multiply
   1,576.76x = 2,175.72 × 947.16
4. Step 4: Simplify right side
   1,576.76x = 2,060,754.96
5. Step 5: Solve for x
   x = 2,060,754.96/1,576.76
6. Step 6: Final answer
   x = 1,306.96