Finding the Fourth Proportional to 696,196.69, 960,751.43 and 394,390.69

Step by Step Solution

1. Step 1: Write the proportion equation
   696,196.69 : 960,751.43 = 394,390.69 : x
2. Step 2: Convert to fraction form
   696,196.69/960,751.43 = 394,390.69/x
3. Step 3: Cross multiply
   696,196.69x = 960,751.43 × 394,390.69
4. Step 4: Simplify right side
   696,196.69x = 378,911,416,501.32
5. Step 5: Solve for x
   x = 378,911,416,501.32/696,196.69
6. Step 6: Final answer
   x = 544,259.15