Finding the Fourth Proportional to 501,741.72, 692,367.42 and 286,890.84

Step by Step Solution

1. Step 1: Write the proportion equation
   501,741.72 : 692,367.42 = 286,890.84 : x
2. Step 2: Convert to fraction form
   501,741.72/692,367.42 = 286,890.84/x
3. Step 3: Cross multiply
   501,741.72x = 692,367.42 × 286,890.84
4. Step 4: Simplify right side
   501,741.72x = 198,633,870,712.43
5. Step 5: Solve for x
   x = 198,633,870,712.43/501,741.72
6. Step 6: Final answer
   x = 395,888.69