Finding the Fourth Proportional to 2,077.30, 3,131.50 and 1,939.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.30 : 3,131.50 = 1,939.81 : x
2. Step 2: Convert to fraction form
   2,077.30/3,131.50 = 1,939.81/x
3. Step 3: Cross multiply
   2,077.30x = 3,131.50 × 1,939.81
4. Step 4: Simplify right side
   2,077.30x = 6,074,515.02
5. Step 5: Solve for x
   x = 6,074,515.02/2,077.30
6. Step 6: Final answer
   x = 2,924.24