Finding the Fourth Proportional to 3,670.27, 5,064.89 and 1,991.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,670.27 : 5,064.89 = 1,991.61 : x
2. Step 2: Convert to fraction form
   3,670.27/5,064.89 = 1,991.61/x
3. Step 3: Cross multiply
   3,670.27x = 5,064.89 × 1,991.61
4. Step 4: Simplify right side
   3,670.27x = 10,087,285.57
5. Step 5: Solve for x
   x = 10,087,285.57/3,670.27
6. Step 6: Final answer
   x = 2,748.38