Finding the Fourth Proportional to 1,758.17, 2,426.25 and 972.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.17 : 2,426.25 = 972.20 : x
2. Step 2: Convert to fraction form
   1,758.17/2,426.25 = 972.20/x
3. Step 3: Cross multiply
   1,758.17x = 2,426.25 × 972.20
4. Step 4: Simplify right side
   1,758.17x = 2,358,800.25
5. Step 5: Solve for x
   x = 2,358,800.25/1,758.17
6. Step 6: Final answer
   x = 1,341.62