Finding the Fourth Proportional to 726,978.33, 1,003,723.93 and 455,156.10

Step by Step Solution

1. Step 1: Write the proportion equation
   726,978.33 : 1,003,723.93 = 455,156.10 : x
2. Step 2: Convert to fraction form
   726,978.33/1,003,723.93 = 455,156.10/x
3. Step 3: Cross multiply
   726,978.33x = 1,003,723.93 × 455,156.10
4. Step 4: Simplify right side
   726,978.33x = 456,851,067,179.69
5. Step 5: Solve for x
   x = 456,851,067,179.69/726,978.33
6. Step 6: Final answer
   x = 628,424.60