Finding the Fourth Proportional to 1,758.20, 2,426.22 and 972.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.20 : 2,426.22 = 972.30 : x
2. Step 2: Convert to fraction form
   1,758.20/2,426.22 = 972.30/x
3. Step 3: Cross multiply
   1,758.20x = 2,426.22 × 972.30
4. Step 4: Simplify right side
   1,758.20x = 2,359,013.71
5. Step 5: Solve for x
   x = 2,359,013.71/1,758.20
6. Step 6: Final answer
   x = 1,341.72