Finding the Fourth Proportional to 2,338.80, 3,501.72 and 1,178.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,338.80 : 3,501.72 = 1,178.88 : x
2. Step 2: Convert to fraction form
   2,338.80/3,501.72 = 1,178.88/x
3. Step 3: Cross multiply
   2,338.80x = 3,501.72 × 1,178.88
4. Step 4: Simplify right side
   2,338.80x = 4,128,107.67
5. Step 5: Solve for x
   x = 4,128,107.67/2,338.80
6. Step 6: Final answer
   x = 1,765.05