Finding the Fourth Proportional to 2,991.32, 4,128.06 and 1,665.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,991.32 : 4,128.06 = 1,665.02 : x
2. Step 2: Convert to fraction form
   2,991.32/4,128.06 = 1,665.02/x
3. Step 3: Cross multiply
   2,991.32x = 4,128.06 × 1,665.02
4. Step 4: Simplify right side
   2,991.32x = 6,873,281.82
5. Step 5: Solve for x
   x = 6,873,281.82/2,991.32
6. Step 6: Final answer
   x = 2,297.75