Finding the Fourth Proportional to 860,478, 1,187,488.72 and 473,309.92

Step by Step Solution

1. Step 1: Write the proportion equation
   860,478 : 1,187,488.72 = 473,309.92 : x
2. Step 2: Convert to fraction form
   860,478/1,187,488.72 = 473,309.92/x
3. Step 3: Cross multiply
   860,478x = 1,187,488.72 × 473,309.92
4. Step 4: Simplify right side
   860,478x = 562,050,191,064.10
5. Step 5: Solve for x
   x = 562,050,191,064.10/860,478
6. Step 6: Final answer
   x = 653,183.69