Finding the Fourth Proportional to 2,142.07, 2,955.86 and 1,356.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.07 : 2,955.86 = 1,356.10 : x
2. Step 2: Convert to fraction form
   2,142.07/2,955.86 = 1,356.10/x
3. Step 3: Cross multiply
   2,142.07x = 2,955.86 × 1,356.10
4. Step 4: Simplify right side
   2,142.07x = 4,008,432.66
5. Step 5: Solve for x
   x = 4,008,432.66/2,142.07
6. Step 6: Final answer
   x = 1,871.29