Finding the Fourth Proportional to 1,561.29, 2,342.82 and 976.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561.29 : 2,342.82 = 976.20 : x
2. Step 2: Convert to fraction form
   1,561.29/2,342.82 = 976.20/x
3. Step 3: Cross multiply
   1,561.29x = 2,342.82 × 976.20
4. Step 4: Simplify right side
   1,561.29x = 2,287,060.88
5. Step 5: Solve for x
   x = 2,287,060.88/1,561.29
6. Step 6: Final answer
   x = 1,464.85