Finding the Fourth Proportional to 1,301.86, 1,796.61 and 712.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.86 : 1,796.61 = 712.39 : x
2. Step 2: Convert to fraction form
   1,301.86/1,796.61 = 712.39/x
3. Step 3: Cross multiply
   1,301.86x = 1,796.61 × 712.39
4. Step 4: Simplify right side
   1,301.86x = 1,279,887.00
5. Step 5: Solve for x
   x = 1,279,887.00/1,301.86
6. Step 6: Final answer
   x = 983.12