Finding the Fourth Proportional to 913.34, 1,257.50 and 796.86

Step by Step Solution

1. Step 1: Write the proportion equation
   913.34 : 1,257.50 = 796.86 : x
2. Step 2: Convert to fraction form
   913.34/1,257.50 = 796.86/x
3. Step 3: Cross multiply
   913.34x = 1,257.50 × 796.86
4. Step 4: Simplify right side
   913.34x = 1,002,051.45
5. Step 5: Solve for x
   x = 1,002,051.45/913.34
6. Step 6: Final answer
   x = 1,097.13