Finding the Fourth Proportional to 1,970.10, 2,718.78 and 1,085.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.10 : 2,718.78 = 1,085.94 : x
2. Step 2: Convert to fraction form
   1,970.10/2,718.78 = 1,085.94/x
3. Step 3: Cross multiply
   1,970.10x = 2,718.78 × 1,085.94
4. Step 4: Simplify right side
   1,970.10x = 2,952,431.95
5. Step 5: Solve for x
   x = 2,952,431.95/1,970.10
6. Step 6: Final answer
   x = 1,498.62