Finding the Fourth Proportional to 1,720.82, 2,374.72 and 934.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,720.82 : 2,374.72 = 934.88 : x
2. Step 2: Convert to fraction form
   1,720.82/2,374.72 = 934.88/x
3. Step 3: Cross multiply
   1,720.82x = 2,374.72 × 934.88
4. Step 4: Simplify right side
   1,720.82x = 2,220,064.02
5. Step 5: Solve for x
   x = 2,220,064.02/1,720.82
6. Step 6: Final answer
   x = 1,290.12