Finding the Fourth Proportional to 1,565.39, 2,161.01 and 976.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,565.39 : 2,161.01 = 976.25 : x
2. Step 2: Convert to fraction form
   1,565.39/2,161.01 = 976.25/x
3. Step 3: Cross multiply
   1,565.39x = 2,161.01 × 976.25
4. Step 4: Simplify right side
   1,565.39x = 2,109,693.86
5. Step 5: Solve for x
   x = 2,109,693.86/1,565.39
6. Step 6: Final answer
   x = 1,347.71