Finding the Fourth Proportional to 2,428.02, 3,349.89 and 1,641.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.02 : 3,349.89 = 1,641.78 : x
2. Step 2: Convert to fraction form
   2,428.02/3,349.89 = 1,641.78/x
3. Step 3: Cross multiply
   2,428.02x = 3,349.89 × 1,641.78
4. Step 4: Simplify right side
   2,428.02x = 5,499,782.40
5. Step 5: Solve for x
   x = 5,499,782.40/2,428.02
6. Step 6: Final answer
   x = 2,265.13