Finding the Fourth Proportional to 3,061.68, 4,591.76 and 1,212.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.68 : 4,591.76 = 1,212.16 : x
2. Step 2: Convert to fraction form
   3,061.68/4,591.76 = 1,212.16/x
3. Step 3: Cross multiply
   3,061.68x = 4,591.76 × 1,212.16
4. Step 4: Simplify right side
   3,061.68x = 5,565,947.80
5. Step 5: Solve for x
   x = 5,565,947.80/3,061.68
6. Step 6: Final answer
   x = 1,817.94