Finding the Fourth Proportional to 2,177.61, 3,003.91 and 1,379.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,177.61 : 3,003.91 = 1,379.49 : x
2. Step 2: Convert to fraction form
   2,177.61/3,003.91 = 1,379.49/x
3. Step 3: Cross multiply
   2,177.61x = 3,003.91 × 1,379.49
4. Step 4: Simplify right side
   2,177.61x = 4,143,863.81
5. Step 5: Solve for x
   x = 4,143,863.81/2,177.61
6. Step 6: Final answer
   x = 1,902.94