Finding the Fourth Proportional to 2,139.42, 2,941.29 and 2,126.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.42 : 2,941.29 = 2,126.10 : x
2. Step 2: Convert to fraction form
   2,139.42/2,941.29 = 2,126.10/x
3. Step 3: Cross multiply
   2,139.42x = 2,941.29 × 2,126.10
4. Step 4: Simplify right side
   2,139.42x = 6,253,476.67
5. Step 5: Solve for x
   x = 6,253,476.67/2,139.42
6. Step 6: Final answer
   x = 2,922.98