Finding the Fourth Proportional to 2,071.76, 3,108.38 and 976.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.76 : 3,108.38 = 976.28 : x
2. Step 2: Convert to fraction form
   2,071.76/3,108.38 = 976.28/x
3. Step 3: Cross multiply
   2,071.76x = 3,108.38 × 976.28
4. Step 4: Simplify right side
   2,071.76x = 3,034,649.23
5. Step 5: Solve for x
   x = 3,034,649.23/2,071.76
6. Step 6: Final answer
   x = 1,464.77