Finding the Fourth Proportional to 712,109.21, 982,710.63 and 389,819.52

Step by Step Solution

1. Step 1: Write the proportion equation
   712,109.21 : 982,710.63 = 389,819.52 : x
2. Step 2: Convert to fraction form
   712,109.21/982,710.63 = 389,819.52/x
3. Step 3: Cross multiply
   712,109.21x = 982,710.63 × 389,819.52
4. Step 4: Simplify right side
   712,109.21x = 383,079,786,085.50
5. Step 5: Solve for x
   x = 383,079,786,085.50/712,109.21
6. Step 6: Final answer
   x = 537,950.90