Finding the Fourth Proportional to 705,844, 974,064.72 and 387,892

Step by Step Solution

1. Step 1: Write the proportion equation
   705,844 : 974,064.72 = 387,892 : x
2. Step 2: Convert to fraction form
   705,844/974,064.72 = 387,892/x
3. Step 3: Cross multiply
   705,844x = 974,064.72 × 387,892
4. Step 4: Simplify right side
   705,844x = 377,831,912,370.24
5. Step 5: Solve for x
   x = 377,831,912,370.24/705,844
6. Step 6: Final answer
   x = 535,290.96