Finding the Fourth Proportional to 911,019.72, 1,257,185.70 and 503,113.44

Step by Step Solution

1. Step 1: Write the proportion equation
   911,019.72 : 1,257,185.70 = 503,113.44 : x
2. Step 2: Convert to fraction form
   911,019.72/1,257,185.70 = 503,113.44/x
3. Step 3: Cross multiply
   911,019.72x = 1,257,185.70 × 503,113.44
4. Step 4: Simplify right side
   911,019.72x = 632,507,022,245.81
5. Step 5: Solve for x
   x = 632,507,022,245.81/911,019.72
6. Step 6: Final answer
   x = 694,284.67