Finding the Fourth Proportional to 864,453.52, 1,296,662.15 and 288,118.52

Step by Step Solution

1. Step 1: Write the proportion equation
   864,453.52 : 1,296,662.15 = 288,118.52 : x
2. Step 2: Convert to fraction form
   864,453.52/1,296,662.15 = 288,118.52/x
3. Step 3: Cross multiply
   864,453.52x = 1,296,662.15 × 288,118.52
4. Step 4: Simplify right side
   864,453.52x = 373,592,377,076.82
5. Step 5: Solve for x
   x = 373,592,377,076.82/864,453.52
6. Step 6: Final answer
   x = 432,171.74