Finding the Fourth Proportional to 978,604.15, 1,467,425.98 and 402,123

Step by Step Solution

1. Step 1: Write the proportion equation
   978,604.15 : 1,467,425.98 = 402,123 : x
2. Step 2: Convert to fraction form
   978,604.15/1,467,425.98 = 402,123/x
3. Step 3: Cross multiply
   978,604.15x = 1,467,425.98 × 402,123
4. Step 4: Simplify right side
   978,604.15x = 590,085,737,355.54
5. Step 5: Solve for x
   x = 590,085,737,355.54/978,604.15
6. Step 6: Final answer
   x = 602,987.16