Finding the Fourth Proportional to 698,652, 964,139.76 and 380,700

Step by Step Solution

1. Step 1: Write the proportion equation
   698,652 : 964,139.76 = 380,700 : x
2. Step 2: Convert to fraction form
   698,652/964,139.76 = 380,700/x
3. Step 3: Cross multiply
   698,652x = 964,139.76 × 380,700
4. Step 4: Simplify right side
   698,652x = 367,048,006,632
5. Step 5: Solve for x
   x = 367,048,006,632/698,652
6. Step 6: Final answer
   x = 525,366