Finding the Fourth Proportional to 978,155.82, 1,467,234.63 and 787,723.20

Step by Step Solution

1. Step 1: Write the proportion equation
   978,155.82 : 1,467,234.63 = 787,723.20 : x
2. Step 2: Convert to fraction form
   978,155.82/1,467,234.63 = 787,723.20/x
3. Step 3: Cross multiply
   978,155.82x = 1,467,234.63 × 787,723.20
4. Step 4: Simplify right side
   978,155.82x = 1,155,774,757,894.42
5. Step 5: Solve for x
   x = 1,155,774,757,894.42/978,155.82
6. Step 6: Final answer
   x = 1,181,585.52