Finding the Fourth Proportional to 2,093.78, 2,890.67 and 1,308.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.78 : 2,890.67 = 1,308.89 : x
2. Step 2: Convert to fraction form
   2,093.78/2,890.67 = 1,308.89/x
3. Step 3: Cross multiply
   2,093.78x = 2,890.67 × 1,308.89
4. Step 4: Simplify right side
   2,093.78x = 3,783,569.06
5. Step 5: Solve for x
   x = 3,783,569.06/2,093.78
6. Step 6: Final answer
   x = 1,807.05