Finding the Fourth Proportional to 3,061.77, 4,590.63 and 1,213.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.77 : 4,590.63 = 1,213.76 : x
2. Step 2: Convert to fraction form
   3,061.77/4,590.63 = 1,213.76/x
3. Step 3: Cross multiply
   3,061.77x = 4,590.63 × 1,213.76
4. Step 4: Simplify right side
   3,061.77x = 5,571,900.12
5. Step 5: Solve for x
   x = 5,571,900.12/3,061.77
6. Step 6: Final answer
   x = 1,819.83