Finding the Fourth Proportional to 1,298,053.82, 1,947,082.05 and 338,508.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298,053.82 : 1,947,082.05 = 338,508.72 : x
2. Step 2: Convert to fraction form
   1,298,053.82/1,947,082.05 = 338,508.72/x
3. Step 3: Cross multiply
   1,298,053.82x = 1,947,082.05 × 338,508.72
4. Step 4: Simplify right side
   1,298,053.82x = 659,104,252,480.48
5. Step 5: Solve for x
   x = 659,104,252,480.48/1,298,053.82
6. Step 6: Final answer
   x = 507,763.42