Finding the Fourth Proportional to 1,924.86, 2,656.36 and 1,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,924.86 : 2,656.36 = 1,085.72 : x
2. Step 2: Convert to fraction form
   1,924.86/2,656.36 = 1,085.72/x
3. Step 3: Cross multiply
   1,924.86x = 2,656.36 × 1,085.72
4. Step 4: Simplify right side
   1,924.86x = 2,884,063.18
5. Step 5: Solve for x
   x = 2,884,063.18/1,924.86
6. Step 6: Final answer
   x = 1,498.32