Finding the Fourth Proportional to 3,518.92, 5,279.06 and 1,053.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,518.92 : 5,279.06 = 1,053.69 : x
2. Step 2: Convert to fraction form
   3,518.92/5,279.06 = 1,053.69/x
3. Step 3: Cross multiply
   3,518.92x = 5,279.06 × 1,053.69
4. Step 4: Simplify right side
   3,518.92x = 5,562,492.73
5. Step 5: Solve for x
   x = 5,562,492.73/3,518.92
6. Step 6: Final answer
   x = 1,580.74