Finding the Fourth Proportional to 2,900.89, 4,003.03 and 1,642.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,900.89 : 4,003.03 = 1,642.09 : x
2. Step 2: Convert to fraction form
   2,900.89/4,003.03 = 1,642.09/x
3. Step 3: Cross multiply
   2,900.89x = 4,003.03 × 1,642.09
4. Step 4: Simplify right side
   2,900.89x = 6,573,335.45
5. Step 5: Solve for x
   x = 6,573,335.45/2,900.89
6. Step 6: Final answer
   x = 2,265.97