Finding the Fourth Proportional to 1,970.27, 2,718.86 and 1,085.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.27 : 2,718.86 = 1,085.88 : x
2. Step 2: Convert to fraction form
   1,970.27/2,718.86 = 1,085.88/x
3. Step 3: Cross multiply
   1,970.27x = 2,718.86 × 1,085.88
4. Step 4: Simplify right side
   1,970.27x = 2,952,355.70
5. Step 5: Solve for x
   x = 2,952,355.70/1,970.27
6. Step 6: Final answer
   x = 1,498.45