Finding the Fourth Proportional to 3,510.12, 5,263.86 and 1,429.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,510.12 : 5,263.86 = 1,429.56 : x
2. Step 2: Convert to fraction form
   3,510.12/5,263.86 = 1,429.56/x
3. Step 3: Cross multiply
   3,510.12x = 5,263.86 × 1,429.56
4. Step 4: Simplify right side
   3,510.12x = 7,525,003.70
5. Step 5: Solve for x
   x = 7,525,003.70/3,510.12
6. Step 6: Final answer
   x = 2,143.80