Finding the Fourth Proportional to 4,061.91, 6,090.66 and 1,392.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,061.91 : 6,090.66 = 1,392.78 : x
2. Step 2: Convert to fraction form
   4,061.91/6,090.66 = 1,392.78/x
3. Step 3: Cross multiply
   4,061.91x = 6,090.66 × 1,392.78
4. Step 4: Simplify right side
   4,061.91x = 8,482,949.43
5. Step 5: Solve for x
   x = 8,482,949.43/4,061.91
6. Step 6: Final answer
   x = 2,088.41