Finding the Fourth Proportional to 3,435.60, 5,151.76 and 1,487

Step by Step Solution

1. Step 1: Write the proportion equation
   3,435.60 : 5,151.76 = 1,487 : x
2. Step 2: Convert to fraction form
   3,435.60/5,151.76 = 1,487/x
3. Step 3: Cross multiply
   3,435.60x = 5,151.76 × 1,487
4. Step 4: Simplify right side
   3,435.60x = 7,660,667.12
5. Step 5: Solve for x
   x = 7,660,667.12/3,435.60
6. Step 6: Final answer
   x = 2,229.79