Finding the Fourth Proportional to 2,151.70, 2,966.50 and 1,404.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.70 : 2,966.50 = 1,404.35 : x
2. Step 2: Convert to fraction form
   2,151.70/2,966.50 = 1,404.35/x
3. Step 3: Cross multiply
   2,151.70x = 2,966.50 × 1,404.35
4. Step 4: Simplify right side
   2,151.70x = 4,165,997.25
5. Step 5: Solve for x
   x = 4,165,997.25/2,151.70
6. Step 6: Final answer
   x = 1,936.15