Finding the Fourth Proportional to 1,429.76, 2,127.74 and 1,377.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.76 : 2,127.74 = 1,377.92 : x
2. Step 2: Convert to fraction form
   1,429.76/2,127.74 = 1,377.92/x
3. Step 3: Cross multiply
   1,429.76x = 2,127.74 × 1,377.92
4. Step 4: Simplify right side
   1,429.76x = 2,931,855.50
5. Step 5: Solve for x
   x = 2,931,855.50/1,429.76
6. Step 6: Final answer
   x = 2,050.59