Finding the Fourth Proportional to 849,499.58, 1,274,446.59 and 280,846.37

Step by Step Solution

1. Step 1: Write the proportion equation
   849,499.58 : 1,274,446.59 = 280,846.37 : x
2. Step 2: Convert to fraction form
   849,499.58/1,274,446.59 = 280,846.37/x
3. Step 3: Cross multiply
   849,499.58x = 1,274,446.59 × 280,846.37
4. Step 4: Simplify right side
   849,499.58x = 357,923,692,188.15
5. Step 5: Solve for x
   x = 357,923,692,188.15/849,499.58
6. Step 6: Final answer
   x = 421,334.75