Finding the Fourth Proportional to 2,068.12, 2,854.43 and 1,902.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.12 : 2,854.43 = 1,902.07 : x
2. Step 2: Convert to fraction form
   2,068.12/2,854.43 = 1,902.07/x
3. Step 3: Cross multiply
   2,068.12x = 2,854.43 × 1,902.07
4. Step 4: Simplify right side
   2,068.12x = 5,429,325.67
5. Step 5: Solve for x
   x = 5,429,325.67/2,068.12
6. Step 6: Final answer
   x = 2,625.25