Finding the Fourth Proportional to 1,429.80, 2,141.30 and 697.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.80 : 2,141.30 = 697.02 : x
2. Step 2: Convert to fraction form
   1,429.80/2,141.30 = 697.02/x
3. Step 3: Cross multiply
   1,429.80x = 2,141.30 × 697.02
4. Step 4: Simplify right side
   1,429.80x = 1,492,528.93
5. Step 5: Solve for x
   x = 1,492,528.93/1,429.80
6. Step 6: Final answer
   x = 1,043.87