Finding the Fourth Proportional to 2,529.76, 3,789.76 and 1,430.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,529.76 : 3,789.76 = 1,430.76 : x
2. Step 2: Convert to fraction form
   2,529.76/3,789.76 = 1,430.76/x
3. Step 3: Cross multiply
   2,529.76x = 3,789.76 × 1,430.76
4. Step 4: Simplify right side
   2,529.76x = 5,422,237.02
5. Step 5: Solve for x
   x = 5,422,237.02/2,529.76
6. Step 6: Final answer
   x = 2,143.38