Finding the Fourth Proportional to 2,072.16, 3,106.20 and 1,342.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,072.16 : 3,106.20 = 1,342.08 : x
2. Step 2: Convert to fraction form
   2,072.16/3,106.20 = 1,342.08/x
3. Step 3: Cross multiply
   2,072.16x = 3,106.20 × 1,342.08
4. Step 4: Simplify right side
   2,072.16x = 4,168,768.90
5. Step 5: Solve for x
   x = 4,168,768.90/2,072.16
6. Step 6: Final answer
   x = 2,011.80