Finding the Fourth Proportional to 1,924.10, 2,656.52 and 1,216.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,924.10 : 2,656.52 = 1,216.23 : x
2. Step 2: Convert to fraction form
   1,924.10/2,656.52 = 1,216.23/x
3. Step 3: Cross multiply
   1,924.10x = 2,656.52 × 1,216.23
4. Step 4: Simplify right side
   1,924.10x = 3,230,951.80
5. Step 5: Solve for x
   x = 3,230,951.80/1,924.10
6. Step 6: Final answer
   x = 1,679.20