Finding the Fourth Proportional to 770,499.88, 1,063,196.64 and 443,919.71

Step by Step Solution

1. Step 1: Write the proportion equation
   770,499.88 : 1,063,196.64 = 443,919.71 : x
2. Step 2: Convert to fraction form
   770,499.88/1,063,196.64 = 443,919.71/x
3. Step 3: Cross multiply
   770,499.88x = 1,063,196.64 × 443,919.71
4. Step 4: Simplify right side
   770,499.88x = 471,973,946,759.77
5. Step 5: Solve for x
   x = 471,973,946,759.77/770,499.88
6. Step 6: Final answer
   x = 612,555.51