Finding the Fourth Proportional to 2,247.12, 3,100.80 and 1,316.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,247.12 : 3,100.80 = 1,316.16 : x
2. Step 2: Convert to fraction form
   2,247.12/3,100.80 = 1,316.16/x
3. Step 3: Cross multiply
   2,247.12x = 3,100.80 × 1,316.16
4. Step 4: Simplify right side
   2,247.12x = 4,081,148.93
5. Step 5: Solve for x
   x = 4,081,148.93/2,247.12
6. Step 6: Final answer
   x = 1,816.17