Finding the Fourth Proportional to 2,177.60, 3,003.89 and 1,379.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,177.60 : 3,003.89 = 1,379.46 : x
2. Step 2: Convert to fraction form
   2,177.60/3,003.89 = 1,379.46/x
3. Step 3: Cross multiply
   2,177.60x = 3,003.89 × 1,379.46
4. Step 4: Simplify right side
   2,177.60x = 4,143,746.10
5. Step 5: Solve for x
   x = 4,143,746.10/2,177.60
6. Step 6: Final answer
   x = 1,902.90