Finding the Fourth Proportional to 1,648.89, 2,477.37 and 1,064.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.89 : 2,477.37 = 1,064.19 : x
2. Step 2: Convert to fraction form
   1,648.89/2,477.37 = 1,064.19/x
3. Step 3: Cross multiply
   1,648.89x = 2,477.37 × 1,064.19
4. Step 4: Simplify right side
   1,648.89x = 2,636,392.38
5. Step 5: Solve for x
   x = 2,636,392.38/1,648.89
6. Step 6: Final answer
   x = 1,598.89