Finding the Fourth Proportional to 702,805.46, 969,870.24 and 380,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   702,805.46 : 969,870.24 = 380,515.50 : x
2. Step 2: Convert to fraction form
   702,805.46/969,870.24 = 380,515.50/x
3. Step 3: Cross multiply
   702,805.46x = 969,870.24 × 380,515.50
4. Step 4: Simplify right side
   702,805.46x = 369,050,659,308.72
5. Step 5: Solve for x
   x = 369,050,659,308.72/702,805.46
6. Step 6: Final answer
   x = 525,110.69