Finding the Fourth Proportional to 1,301.90, 1,796.65 and 712.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.90 : 1,796.65 = 712.42 : x
2. Step 2: Convert to fraction form
   1,301.90/1,796.65 = 712.42/x
3. Step 3: Cross multiply
   1,301.90x = 1,796.65 × 712.42
4. Step 4: Simplify right side
   1,301.90x = 1,279,963.12
5. Step 5: Solve for x
   x = 1,279,963.12/1,301.90
6. Step 6: Final answer
   x = 983.15