Finding the Fourth Proportional to 510,885.06, 705,053.61 and 284,530.02

Step by Step Solution

1. Step 1: Write the proportion equation
   510,885.06 : 705,053.61 = 284,530.02 : x
2. Step 2: Convert to fraction form
   510,885.06/705,053.61 = 284,530.02/x
3. Step 3: Cross multiply
   510,885.06x = 705,053.61 × 284,530.02
4. Step 4: Simplify right side
   510,885.06x = 200,608,917,754.37
5. Step 5: Solve for x
   x = 200,608,917,754.37/510,885.06
6. Step 6: Final answer
   x = 392,669.38