Finding the Fourth Proportional to 1,856.50, 2,562.28 and 1,070.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.50 : 2,562.28 = 1,070.42 : x
2. Step 2: Convert to fraction form
   1,856.50/2,562.28 = 1,070.42/x
3. Step 3: Cross multiply
   1,856.50x = 2,562.28 × 1,070.42
4. Step 4: Simplify right side
   1,856.50x = 2,742,715.76
5. Step 5: Solve for x
   x = 2,742,715.76/1,856.50
6. Step 6: Final answer
   x = 1,477.36