Finding the Fourth Proportional to 1,924.88, 2,656.61 and 1,178.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,924.88 : 2,656.61 = 1,178.70 : x
2. Step 2: Convert to fraction form
   1,924.88/2,656.61 = 1,178.70/x
3. Step 3: Cross multiply
   1,924.88x = 2,656.61 × 1,178.70
4. Step 4: Simplify right side
   1,924.88x = 3,131,340.31
5. Step 5: Solve for x
   x = 3,131,340.31/1,924.88
6. Step 6: Final answer
   x = 1,626.78