Finding the Fourth Proportional to 2,086.31, 3,130.25 and 976.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.31 : 3,130.25 = 976.35 : x
2. Step 2: Convert to fraction form
   2,086.31/3,130.25 = 976.35/x
3. Step 3: Cross multiply
   2,086.31x = 3,130.25 × 976.35
4. Step 4: Simplify right side
   2,086.31x = 3,056,219.59
5. Step 5: Solve for x
   x = 3,056,219.59/2,086.31
6. Step 6: Final answer
   x = 1,464.90