Finding the Fourth Proportional to 2,077.74, 3,116.34 and 690.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.74 : 3,116.34 = 690.84 : x
2. Step 2: Convert to fraction form
   2,077.74/3,116.34 = 690.84/x
3. Step 3: Cross multiply
   2,077.74x = 3,116.34 × 690.84
4. Step 4: Simplify right side
   2,077.74x = 2,152,892.33
5. Step 5: Solve for x
   x = 2,152,892.33/2,077.74
6. Step 6: Final answer
   x = 1,036.17