Finding the Fourth Proportional to 2,076.76, 3,120 and 1,036.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.76 : 3,120 = 1,036.72 : x
2. Step 2: Convert to fraction form
   2,076.76/3,120 = 1,036.72/x
3. Step 3: Cross multiply
   2,076.76x = 3,120 × 1,036.72
4. Step 4: Simplify right side
   2,076.76x = 3,234,566.40
5. Step 5: Solve for x
   x = 3,234,566.40/2,076.76
6. Step 6: Final answer
   x = 1,557.51