Finding the Fourth Proportional to 501,870.18, 692,491.46 and 284,077.74

Step by Step Solution

1. Step 1: Write the proportion equation
   501,870.18 : 692,491.46 = 284,077.74 : x
2. Step 2: Convert to fraction form
   501,870.18/692,491.46 = 284,077.74/x
3. Step 3: Cross multiply
   501,870.18x = 692,491.46 × 284,077.74
4. Step 4: Simplify right side
   501,870.18x = 196,721,408,926.10
5. Step 5: Solve for x
   x = 196,721,408,926.10/501,870.18
6. Step 6: Final answer
   x = 391,976.68