Finding the Fourth Proportional to 698,595, 964,061.10 and 380,643

Step by Step Solution

1. Step 1: Write the proportion equation
   698,595 : 964,061.10 = 380,643 : x
2. Step 2: Convert to fraction form
   698,595/964,061.10 = 380,643/x
3. Step 3: Cross multiply
   698,595x = 964,061.10 × 380,643
4. Step 4: Simplify right side
   698,595x = 366,963,109,287.30
5. Step 5: Solve for x
   x = 366,963,109,287.30/698,595
6. Step 6: Final answer
   x = 525,287.34