Finding the Fourth Proportional to 1,132.62, 1,697.76 and 670.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.62 : 1,697.76 = 670.31 : x
2. Step 2: Convert to fraction form
   1,132.62/1,697.76 = 670.31/x
3. Step 3: Cross multiply
   1,132.62x = 1,697.76 × 670.31
4. Step 4: Simplify right side
   1,132.62x = 1,138,025.51
5. Step 5: Solve for x
   x = 1,138,025.51/1,132.62
6. Step 6: Final answer
   x = 1,004.77