Finding the Fourth Proportional to 2,068.20, 2,851.20 and 1,405.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.20 : 2,851.20 = 1,405.08 : x
2. Step 2: Convert to fraction form
   2,068.20/2,851.20 = 1,405.08/x
3. Step 3: Cross multiply
   2,068.20x = 2,851.20 × 1,405.08
4. Step 4: Simplify right side
   2,068.20x = 4,006,164.10
5. Step 5: Solve for x
   x = 4,006,164.10/2,068.20
6. Step 6: Final answer
   x = 1,937.03