Finding the Fourth Proportional to 606,498.84, 907,986.24 and 353,005.56

Step by Step Solution

1. Step 1: Write the proportion equation
   606,498.84 : 907,986.24 = 353,005.56 : x
2. Step 2: Convert to fraction form
   606,498.84/907,986.24 = 353,005.56/x
3. Step 3: Cross multiply
   606,498.84x = 907,986.24 × 353,005.56
4. Step 4: Simplify right side
   606,498.84x = 320,524,191,123.49
5. Step 5: Solve for x
   x = 320,524,191,123.49/606,498.84
6. Step 6: Final answer
   x = 528,482.78