Finding the Fourth Proportional to 666,196.02, 919,327.59 and 379,808.34

Step by Step Solution

1. Step 1: Write the proportion equation
   666,196.02 : 919,327.59 = 379,808.34 : x
2. Step 2: Convert to fraction form
   666,196.02/919,327.59 = 379,808.34/x
3. Step 3: Cross multiply
   666,196.02x = 919,327.59 × 379,808.34
4. Step 4: Simplify right side
   666,196.02x = 349,168,285,874.10
5. Step 5: Solve for x
   x = 349,168,285,874.10/666,196.02
6. Step 6: Final answer
   x = 524,122.44