Finding the Fourth Proportional to 693,343.40, 956,796.72 and 387,401

Step by Step Solution

1. Step 1: Write the proportion equation
   693,343.40 : 956,796.72 = 387,401 : x
2. Step 2: Convert to fraction form
   693,343.40/956,796.72 = 387,401/x
3. Step 3: Cross multiply
   693,343.40x = 956,796.72 × 387,401
4. Step 4: Simplify right side
   693,343.40x = 370,664,006,124.72
5. Step 5: Solve for x
   x = 370,664,006,124.72/693,343.40
6. Step 6: Final answer
   x = 534,603.79