Finding the Fourth Proportional to 3,061.47, 4,590.81 and 1,212.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.47 : 4,590.81 = 1,212.29 : x
2. Step 2: Convert to fraction form
   3,061.47/4,590.81 = 1,212.29/x
3. Step 3: Cross multiply
   3,061.47x = 4,590.81 × 1,212.29
4. Step 4: Simplify right side
   3,061.47x = 5,565,370.10
5. Step 5: Solve for x
   x = 5,565,370.10/3,061.47
6. Step 6: Final answer
   x = 1,817.88