Finding the Fourth Proportional to 1,401.17, 1,932.05 and 903.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.17 : 1,932.05 = 903.15 : x
2. Step 2: Convert to fraction form
   1,401.17/1,932.05 = 903.15/x
3. Step 3: Cross multiply
   1,401.17x = 1,932.05 × 903.15
4. Step 4: Simplify right side
   1,401.17x = 1,744,933.22
5. Step 5: Solve for x
   x = 1,744,933.22/1,401.17
6. Step 6: Final answer
   x = 1,245.34