Finding the Fourth Proportional to 690,300.37, 952,605.42 and 380,196.99

Step by Step Solution

1. Step 1: Write the proportion equation
   690,300.37 : 952,605.42 = 380,196.99 : x
2. Step 2: Convert to fraction form
   690,300.37/952,605.42 = 380,196.99/x
3. Step 3: Cross multiply
   690,300.37x = 952,605.42 × 380,196.99
4. Step 4: Simplify right side
   690,300.37x = 362,177,716,913.96
5. Step 5: Solve for x
   x = 362,177,716,913.96/690,300.37
6. Step 6: Final answer
   x = 524,666.85