Finding the Fourth Proportional to 1,857.02, 2,562.71 and 1,071.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.02 : 2,562.71 = 1,071.05 : x
2. Step 2: Convert to fraction form
   1,857.02/2,562.71 = 1,071.05/x
3. Step 3: Cross multiply
   1,857.02x = 2,562.71 × 1,071.05
4. Step 4: Simplify right side
   1,857.02x = 2,744,772.38
5. Step 5: Solve for x
   x = 2,744,772.38/1,857.02
6. Step 6: Final answer
   x = 1,478.06