Finding the Fourth Proportional to 1,401.58, 1,938.36 and 1,231.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.58 : 1,938.36 = 1,231.48 : x
2. Step 2: Convert to fraction form
   1,401.58/1,938.36 = 1,231.48/x
3. Step 3: Cross multiply
   1,401.58x = 1,938.36 × 1,231.48
4. Step 4: Simplify right side
   1,401.58x = 2,387,051.57
5. Step 5: Solve for x
   x = 2,387,051.57/1,401.58
6. Step 6: Final answer
   x = 1,703.11