Finding the Fourth Proportional to 1,856.27, 2,561.73 and 1,070.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.27 : 2,561.73 = 1,070.39 : x
2. Step 2: Convert to fraction form
   1,856.27/2,561.73 = 1,070.39/x
3. Step 3: Cross multiply
   1,856.27x = 2,561.73 × 1,070.39
4. Step 4: Simplify right side
   1,856.27x = 2,742,050.17
5. Step 5: Solve for x
   x = 2,742,050.17/1,856.27
6. Step 6: Final answer
   x = 1,477.18