Finding the Fourth Proportional to 2,077.79, 3,109.38 and 1,298.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.79 : 3,109.38 = 1,298.16 : x
2. Step 2: Convert to fraction form
   2,077.79/3,109.38 = 1,298.16/x
3. Step 3: Cross multiply
   2,077.79x = 3,109.38 × 1,298.16
4. Step 4: Simplify right side
   2,077.79x = 4,036,466.25
5. Step 5: Solve for x
   x = 4,036,466.25/2,077.79
6. Step 6: Final answer
   x = 1,942.67