Finding the Fourth Proportional to 2,139.82, 2,952.93 and 1,354.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.82 : 2,952.93 = 1,354.51 : x
2. Step 2: Convert to fraction form
   2,139.82/2,952.93 = 1,354.51/x
3. Step 3: Cross multiply
   2,139.82x = 2,952.93 × 1,354.51
4. Step 4: Simplify right side
   2,139.82x = 3,999,773.21
5. Step 5: Solve for x
   x = 3,999,773.21/2,139.82
6. Step 6: Final answer
   x = 1,869.21