Finding the Fourth Proportional to 3,642.46, 5,026.61 and 2,070.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,642.46 : 5,026.61 = 2,070.57 : x
2. Step 2: Convert to fraction form
   3,642.46/5,026.61 = 2,070.57/x
3. Step 3: Cross multiply
   3,642.46x = 5,026.61 × 2,070.57
4. Step 4: Simplify right side
   3,642.46x = 10,407,947.87
5. Step 5: Solve for x
   x = 10,407,947.87/3,642.46
6. Step 6: Final answer
   x = 2,857.40