Finding the Fourth Proportional to 978,558.96, 1,468,212.06 and 379,940.42

Step by Step Solution

1. Step 1: Write the proportion equation
   978,558.96 : 1,468,212.06 = 379,940.42 : x
2. Step 2: Convert to fraction form
   978,558.96/1,468,212.06 = 379,940.42/x
3. Step 3: Cross multiply
   978,558.96x = 1,468,212.06 × 379,940.42
4. Step 4: Simplify right side
   978,558.96x = 557,833,106,725.47
5. Step 5: Solve for x
   x = 557,833,106,725.47/978,558.96
6. Step 6: Final answer
   x = 570,055.69