Finding the Fourth Proportional to 2,443.84, 3,666.48 and 1,057.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.84 : 3,666.48 = 1,057.60 : x
2. Step 2: Convert to fraction form
   2,443.84/3,666.48 = 1,057.60/x
3. Step 3: Cross multiply
   2,443.84x = 3,666.48 × 1,057.60
4. Step 4: Simplify right side
   2,443.84x = 3,877,669.25
5. Step 5: Solve for x
   x = 3,877,669.25/2,443.84
6. Step 6: Final answer
   x = 1,586.71