Finding the Fourth Proportional to 2,145.34, 2,961.12 and 1,401.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.34 : 2,961.12 = 1,401.16 : x
2. Step 2: Convert to fraction form
   2,145.34/2,961.12 = 1,401.16/x
3. Step 3: Cross multiply
   2,145.34x = 2,961.12 × 1,401.16
4. Step 4: Simplify right side
   2,145.34x = 4,149,002.90
5. Step 5: Solve for x
   x = 4,149,002.90/2,145.34
6. Step 6: Final answer
   x = 1,933.96