Finding the Fourth Proportional to 1,720.22, 2,373.86 and 934.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,720.22 : 2,373.86 = 934.27 : x
2. Step 2: Convert to fraction form
   1,720.22/2,373.86 = 934.27/x
3. Step 3: Cross multiply
   1,720.22x = 2,373.86 × 934.27
4. Step 4: Simplify right side
   1,720.22x = 2,217,822.58
5. Step 5: Solve for x
   x = 2,217,822.58/1,720.22
6. Step 6: Final answer
   x = 1,289.27