Finding the Fourth Proportional to 1,970.28, 2,718.74 and 1,131.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.28 : 2,718.74 = 1,131.02 : x
2. Step 2: Convert to fraction form
   1,970.28/2,718.74 = 1,131.02/x
3. Step 3: Cross multiply
   1,970.28x = 2,718.74 × 1,131.02
4. Step 4: Simplify right side
   1,970.28x = 3,074,949.31
5. Step 5: Solve for x
   x = 3,074,949.31/1,970.28
6. Step 6: Final answer
   x = 1,560.67