Finding the Fourth Proportional to 1,142.32, 1,576.20 and 670.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.32 : 1,576.20 = 670.27 : x
2. Step 2: Convert to fraction form
   1,142.32/1,576.20 = 670.27/x
3. Step 3: Cross multiply
   1,142.32x = 1,576.20 × 670.27
4. Step 4: Simplify right side
   1,142.32x = 1,056,479.57
5. Step 5: Solve for x
   x = 1,056,479.57/1,142.32
6. Step 6: Final answer
   x = 924.85