Finding the Fourth Proportional to 1,298,019.95, 1,947,031.42 and 338,474.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298,019.95 : 1,947,031.42 = 338,474.71 : x
2. Step 2: Convert to fraction form
   1,298,019.95/1,947,031.42 = 338,474.71/x
3. Step 3: Cross multiply
   1,298,019.95x = 1,947,031.42 × 338,474.71
4. Step 4: Simplify right side
   1,298,019.95x = 659,020,895,245.39
5. Step 5: Solve for x
   x = 659,020,895,245.39/1,298,019.95
6. Step 6: Final answer
   x = 507,712.45