Finding the Fourth Proportional to 1,128,243.42, 1,556,753.85 and 669,272.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128,243.42 : 1,556,753.85 = 669,272.31 : x
2. Step 2: Convert to fraction form
   1,128,243.42/1,556,753.85 = 669,272.31/x
3. Step 3: Cross multiply
   1,128,243.42x = 1,556,753.85 × 669,272.31
4. Step 4: Simplify right side
   1,128,243.42x = 1,041,892,245,290.89
5. Step 5: Solve for x
   x = 1,041,892,245,290.89/1,128,243.42
6. Step 6: Final answer
   x = 923,464.06