Finding the Fourth Proportional to 653,196.83, 979,856.87 and 253,868.18

Step by Step Solution

1. Step 1: Write the proportion equation
   653,196.83 : 979,856.87 = 253,868.18 : x
2. Step 2: Convert to fraction form
   653,196.83/979,856.87 = 253,868.18/x
3. Step 3: Cross multiply
   653,196.83x = 979,856.87 × 253,868.18
4. Step 4: Simplify right side
   653,196.83x = 248,754,474,078.77
5. Step 5: Solve for x
   x = 248,754,474,078.77/653,196.83
6. Step 6: Final answer
   x = 380,826.21