Finding the Fourth Proportional to 1,856.41, 2,561.89 and 1,070.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.41 : 2,561.89 = 1,070.50 : x
2. Step 2: Convert to fraction form
   1,856.41/2,561.89 = 1,070.50/x
3. Step 3: Cross multiply
   1,856.41x = 2,561.89 × 1,070.50
4. Step 4: Simplify right side
   1,856.41x = 2,742,503.25
5. Step 5: Solve for x
   x = 2,742,503.25/1,856.41
6. Step 6: Final answer
   x = 1,477.32