Finding the Fourth Proportional to 1,719.79, 2,373.72 and 1,131.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,719.79 : 2,373.72 = 1,131.12 : x
2. Step 2: Convert to fraction form
   1,719.79/2,373.72 = 1,131.12/x
3. Step 3: Cross multiply
   1,719.79x = 2,373.72 × 1,131.12
4. Step 4: Simplify right side
   1,719.79x = 2,684,962.17
5. Step 5: Solve for x
   x = 2,684,962.17/1,719.79
6. Step 6: Final answer
   x = 1,561.22