Finding the Fourth Proportional to 1,142.27, 1,576.34 and 670.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142.27 : 1,576.34 = 670.06 : x
2. Step 2: Convert to fraction form
   1,142.27/1,576.34 = 670.06/x
3. Step 3: Cross multiply
   1,142.27x = 1,576.34 × 670.06
4. Step 4: Simplify right side
   1,142.27x = 1,056,242.38
5. Step 5: Solve for x
   x = 1,056,242.38/1,142.27
6. Step 6: Final answer
   x = 924.69