Finding the Fourth Proportional to 1,839.76, 2,760.63 and 1,429.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839.76 : 2,760.63 = 1,429.72 : x
2. Step 2: Convert to fraction form
   1,839.76/2,760.63 = 1,429.72/x
3. Step 3: Cross multiply
   1,839.76x = 2,760.63 × 1,429.72
4. Step 4: Simplify right side
   1,839.76x = 3,946,927.92
5. Step 5: Solve for x
   x = 3,946,927.92/1,839.76
6. Step 6: Final answer
   x = 2,145.35