Finding the Fourth Proportional to 2,910.90, 4,362.85 and 1,348.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,910.90 : 4,362.85 = 1,348.78 : x
2. Step 2: Convert to fraction form
   2,910.90/4,362.85 = 1,348.78/x
3. Step 3: Cross multiply
   2,910.90x = 4,362.85 × 1,348.78
4. Step 4: Simplify right side
   2,910.90x = 5,884,524.82
5. Step 5: Solve for x
   x = 5,884,524.82/2,910.90
6. Step 6: Final answer
   x = 2,021.55