Finding the Fourth Proportional to 2,612.35, 3,914.59 and 1,571.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.35 : 3,914.59 = 1,571.21 : x
2. Step 2: Convert to fraction form
   2,612.35/3,914.59 = 1,571.21/x
3. Step 3: Cross multiply
   2,612.35x = 3,914.59 × 1,571.21
4. Step 4: Simplify right side
   2,612.35x = 6,150,642.95
5. Step 5: Solve for x
   x = 6,150,642.95/2,612.35
6. Step 6: Final answer
   x = 2,354.45