Finding the Fourth Proportional to 3,071.99, 4,607.72 and 1,222.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,071.99 : 4,607.72 = 1,222.61 : x
2. Step 2: Convert to fraction form
   3,071.99/4,607.72 = 1,222.61/x
3. Step 3: Cross multiply
   3,071.99x = 4,607.72 × 1,222.61
4. Step 4: Simplify right side
   3,071.99x = 5,633,444.55
5. Step 5: Solve for x
   x = 5,633,444.55/3,071.99
6. Step 6: Final answer
   x = 1,833.81