Finding the Fourth Proportional to 474,061.57, 654,216.81 and 287,795.29

Step by Step Solution

1. Step 1: Write the proportion equation
   474,061.57 : 654,216.81 = 287,795.29 : x
2. Step 2: Convert to fraction form
   474,061.57/654,216.81 = 287,795.29/x
3. Step 3: Cross multiply
   474,061.57x = 654,216.81 × 287,795.29
4. Step 4: Simplify right side
   474,061.57x = 188,280,516,556.83
5. Step 5: Solve for x
   x = 188,280,516,556.83/474,061.57
6. Step 6: Final answer
   x = 397,164.69