Finding the Fourth Proportional to 2,151.51, 2,969.58 and 1,404.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.51 : 2,969.58 = 1,404.15 : x
2. Step 2: Convert to fraction form
   2,151.51/2,969.58 = 1,404.15/x
3. Step 3: Cross multiply
   2,151.51x = 2,969.58 × 1,404.15
4. Step 4: Simplify right side
   2,151.51x = 4,169,735.76
5. Step 5: Solve for x
   x = 4,169,735.76/2,151.51
6. Step 6: Final answer
   x = 1,938.05