Finding the Fourth Proportional to 1,003.10, 1,401.10 and 1,003.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.10 : 1,401.10 = 1,003.10 : x
2. Step 2: Convert to fraction form
   1,003.10/1,401.10 = 1,003.10/x
3. Step 3: Cross multiply
   1,003.10x = 1,401.10 × 1,003.10
4. Step 4: Simplify right side
   1,003.10x = 1,405,443.41
5. Step 5: Solve for x
   x = 1,405,443.41/1,003.10
6. Step 6: Final answer
   x = 1,401.10