Finding the Fourth Proportional to 978,557.96, 1,468,210.56 and 379,939.42

Step by Step Solution

1. Step 1: Write the proportion equation
   978,557.96 : 1,468,210.56 = 379,939.42 : x
2. Step 2: Convert to fraction form
   978,557.96/1,468,210.56 = 379,939.42/x
3. Step 3: Cross multiply
   978,557.96x = 1,468,210.56 × 379,939.42
4. Step 4: Simplify right side
   978,557.96x = 557,831,068,604.28
5. Step 5: Solve for x
   x = 557,831,068,604.28/978,557.96
6. Step 6: Final answer
   x = 570,054.19