Finding the Fourth Proportional to 738,128.10, 1,105,442.55 and 738,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   738,128.10 : 1,105,442.55 = 738,128.10 : x
2. Step 2: Convert to fraction form
   738,128.10/1,105,442.55 = 738,128.10/x
3. Step 3: Cross multiply
   738,128.10x = 1,105,442.55 × 738,128.10
4. Step 4: Simplify right side
   738,128.10x = 815,958,209,090.66
5. Step 5: Solve for x
   x = 815,958,209,090.66/738,128.10
6. Step 6: Final answer
   x = 1,105,442.55