Finding the Fourth Proportional to 1,970.72, 2,718.72 and 1,381.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.72 : 2,718.72 = 1,381.04 : x
2. Step 2: Convert to fraction form
   1,970.72/2,718.72 = 1,381.04/x
3. Step 3: Cross multiply
   1,970.72x = 2,718.72 × 1,381.04
4. Step 4: Simplify right side
   1,970.72x = 3,754,661.07
5. Step 5: Solve for x
   x = 3,754,661.07/1,970.72
6. Step 6: Final answer
   x = 1,905.22