Finding the Fourth Proportional to 2,131.85, 2,940.02 and 1,677.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.85 : 2,940.02 = 1,677.80 : x
2. Step 2: Convert to fraction form
   2,131.85/2,940.02 = 1,677.80/x
3. Step 3: Cross multiply
   2,131.85x = 2,940.02 × 1,677.80
4. Step 4: Simplify right side
   2,131.85x = 4,932,748.76
5. Step 5: Solve for x
   x = 4,932,748.76/2,131.85
6. Step 6: Final answer
   x = 2,313.84