Finding the Fourth Proportional to 2,991.88, 4,128.82 and 1,665.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991.88 : 4,128.82 = 1,665.46 : x
2. Step 2: Convert to fraction form
   2,991.88/4,128.82 = 1,665.46/x
3. Step 3: Cross multiply
   2,991.88x = 4,128.82 × 1,665.46
4. Step 4: Simplify right side
   2,991.88x = 6,876,384.56
5. Step 5: Solve for x
   x = 6,876,384.56/2,991.88
6. Step 6: Final answer
   x = 2,298.35