Finding the Fourth Proportional to 2,061.10, 3,090.30 and 744.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.10 : 3,090.30 = 744.31 : x
2. Step 2: Convert to fraction form
   2,061.10/3,090.30 = 744.31/x
3. Step 3: Cross multiply
   2,061.10x = 3,090.30 × 744.31
4. Step 4: Simplify right side
   2,061.10x = 2,300,141.19
5. Step 5: Solve for x
   x = 2,300,141.19/2,061.10
6. Step 6: Final answer
   x = 1,115.98