Finding the Fourth Proportional to 1,877.58, 2,819.81 and 1,057.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,877.58 : 2,819.81 = 1,057.46 : x
2. Step 2: Convert to fraction form
   1,877.58/2,819.81 = 1,057.46/x
3. Step 3: Cross multiply
   1,877.58x = 2,819.81 × 1,057.46
4. Step 4: Simplify right side
   1,877.58x = 2,981,824.83
5. Step 5: Solve for x
   x = 2,981,824.83/1,877.58
6. Step 6: Final answer
   x = 1,588.12