Finding the Fourth Proportional to 862,019.58, 1,293,026.94 and 388,150.14

Step by Step Solution

1. Step 1: Write the proportion equation
   862,019.58 : 1,293,026.94 = 388,150.14 : x
2. Step 2: Convert to fraction form
   862,019.58/1,293,026.94 = 388,150.14/x
3. Step 3: Cross multiply
   862,019.58x = 1,293,026.94 × 388,150.14
4. Step 4: Simplify right side
   862,019.58x = 501,888,587,784.77
5. Step 5: Solve for x
   x = 501,888,587,784.77/862,019.58
6. Step 6: Final answer
   x = 582,224.12