Finding the Fourth Proportional to 860,196.52, 1,290,449.91 and 354,476

Step by Step Solution

1. Step 1: Write the proportion equation
   860,196.52 : 1,290,449.91 = 354,476 : x
2. Step 2: Convert to fraction form
   860,196.52/1,290,449.91 = 354,476/x
3. Step 3: Cross multiply
   860,196.52x = 1,290,449.91 × 354,476
4. Step 4: Simplify right side
   860,196.52x = 457,433,522,297.16
5. Step 5: Solve for x
   x = 457,433,522,297.16/860,196.52
6. Step 6: Final answer
   x = 531,777.93