Finding the Fourth Proportional to 2,045.89, 3,070.38 and 1,639.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.89 : 3,070.38 = 1,639.93 : x
2. Step 2: Convert to fraction form
   2,045.89/3,070.38 = 1,639.93/x
3. Step 3: Cross multiply
   2,045.89x = 3,070.38 × 1,639.93
4. Step 4: Simplify right side
   2,045.89x = 5,035,218.26
5. Step 5: Solve for x
   x = 5,035,218.26/2,045.89
6. Step 6: Final answer
   x = 2,461.13