Finding the Fourth Proportional to 2,069.48, 2,856.42 and 1,370.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.48 : 2,856.42 = 1,370.60 : x
2. Step 2: Convert to fraction form
   2,069.48/2,856.42 = 1,370.60/x
3. Step 3: Cross multiply
   2,069.48x = 2,856.42 × 1,370.60
4. Step 4: Simplify right side
   2,069.48x = 3,915,009.25
5. Step 5: Solve for x
   x = 3,915,009.25/2,069.48
6. Step 6: Final answer
   x = 1,891.78