Finding the Fourth Proportional to 671,300.50, 926,398.54 and 365,376.15

Step by Step Solution

1. Step 1: Write the proportion equation
   671,300.50 : 926,398.54 = 365,376.15 : x
2. Step 2: Convert to fraction form
   671,300.50/926,398.54 = 365,376.15/x
3. Step 3: Cross multiply
   671,300.50x = 926,398.54 × 365,376.15
4. Step 4: Simplify right side
   671,300.50x = 338,483,931,910.82
5. Step 5: Solve for x
   x = 338,483,931,910.82/671,300.50
6. Step 6: Final answer
   x = 504,221.19