Finding the Fourth Proportional to 2,077.51, 3,115.96 and 690.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.51 : 3,115.96 = 690.82 : x
2. Step 2: Convert to fraction form
   2,077.51/3,115.96 = 690.82/x
3. Step 3: Cross multiply
   2,077.51x = 3,115.96 × 690.82
4. Step 4: Simplify right side
   2,077.51x = 2,152,548.45
5. Step 5: Solve for x
   x = 2,152,548.45/2,077.51
6. Step 6: Final answer
   x = 1,036.12