Finding the Fourth Proportional to 2,107.94, 3,147.03 and 1,611.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.94 : 3,147.03 = 1,611.72 : x
2. Step 2: Convert to fraction form
   2,107.94/3,147.03 = 1,611.72/x
3. Step 3: Cross multiply
   2,107.94x = 3,147.03 × 1,611.72
4. Step 4: Simplify right side
   2,107.94x = 5,072,131.19
5. Step 5: Solve for x
   x = 5,072,131.19/2,107.94
6. Step 6: Final answer
   x = 2,406.21