Finding the Fourth Proportional to 2,123.61, 2,930.37 and 1,179.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123.61 : 2,930.37 = 1,179.17 : x
2. Step 2: Convert to fraction form
   2,123.61/2,930.37 = 1,179.17/x
3. Step 3: Cross multiply
   2,123.61x = 2,930.37 × 1,179.17
4. Step 4: Simplify right side
   2,123.61x = 3,455,398.50
5. Step 5: Solve for x
   x = 3,455,398.50/2,123.61
6. Step 6: Final answer
   x = 1,627.14