Finding the Fourth Proportional to 1,612.27, 2,419.61 and 1,200.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.27 : 2,419.61 = 1,200.16 : x
2. Step 2: Convert to fraction form
   1,612.27/2,419.61 = 1,200.16/x
3. Step 3: Cross multiply
   1,612.27x = 2,419.61 × 1,200.16
4. Step 4: Simplify right side
   1,612.27x = 2,903,907.09
5. Step 5: Solve for x
   x = 2,903,907.09/1,612.27
6. Step 6: Final answer
   x = 1,801.13