Finding the Fourth Proportional to 1,523.31, 2,281.77 and 972.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,523.31 : 2,281.77 = 972.69 : x
2. Step 2: Convert to fraction form
   1,523.31/2,281.77 = 972.69/x
3. Step 3: Cross multiply
   1,523.31x = 2,281.77 × 972.69
4. Step 4: Simplify right side
   1,523.31x = 2,219,449.95
5. Step 5: Solve for x
   x = 2,219,449.95/1,523.31
6. Step 6: Final answer
   x = 1,456.99