Finding the Fourth Proportional to 2,287.42, 3,156.69 and 1,402.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.42 : 3,156.69 = 1,402.71 : x
2. Step 2: Convert to fraction form
   2,287.42/3,156.69 = 1,402.71/x
3. Step 3: Cross multiply
   2,287.42x = 3,156.69 × 1,402.71
4. Step 4: Simplify right side
   2,287.42x = 4,427,920.63
5. Step 5: Solve for x
   x = 4,427,920.63/2,287.42
6. Step 6: Final answer
   x = 1,935.77