Finding the Fourth Proportional to 2,090.45, 3,131.42 and 1,677.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.45 : 3,131.42 = 1,677.35 : x
2. Step 2: Convert to fraction form
   2,090.45/3,131.42 = 1,677.35/x
3. Step 3: Cross multiply
   2,090.45x = 3,131.42 × 1,677.35
4. Step 4: Simplify right side
   2,090.45x = 5,252,463.29
5. Step 5: Solve for x
   x = 5,252,463.29/2,090.45
6. Step 6: Final answer
   x = 2,512.61