Finding the Fourth Proportional to 2,231,080.76, 3,078,915.36 and 1,212,485.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231,080.76 : 3,078,915.36 = 1,212,485.60 : x
2. Step 2: Convert to fraction form
   2,231,080.76/3,078,915.36 = 1,212,485.60/x
3. Step 3: Cross multiply
   2,231,080.76x = 3,078,915.36 × 1,212,485.60
4. Step 4: Simplify right side
   2,231,080.76x = 3,733,140,537,618.82
5. Step 5: Solve for x
   x = 3,733,140,537,618.82/2,231,080.76
6. Step 6: Final answer
   x = 1,673,243.12