Finding the Fourth Proportional to 599,131.89, 826,422.35 and 455,577.21

Step by Step Solution

1. Step 1: Write the proportion equation
   599,131.89 : 826,422.35 = 455,577.21 : x
2. Step 2: Convert to fraction form
   599,131.89/826,422.35 = 455,577.21/x
3. Step 3: Cross multiply
   599,131.89x = 826,422.35 × 455,577.21
4. Step 4: Simplify right side
   599,131.89x = 376,499,186,216.76
5. Step 5: Solve for x
   x = 376,499,186,216.76/599,131.89
6. Step 6: Final answer
   x = 628,407.86