Finding the Fourth Proportional to 705,689.15, 973,845.77 and 383,401.89

Step by Step Solution

1. Step 1: Write the proportion equation
   705,689.15 : 973,845.77 = 383,401.89 : x
2. Step 2: Convert to fraction form
   705,689.15/973,845.77 = 383,401.89/x
3. Step 3: Cross multiply
   705,689.15x = 973,845.77 × 383,401.89
4. Step 4: Simplify right side
   705,689.15x = 373,374,306,869.50
5. Step 5: Solve for x
   x = 373,374,306,869.50/705,689.15
6. Step 6: Final answer
   x = 529,091.75