Finding the Fourth Proportional to 2,100.95, 3,129.87 and 2,006.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.95 : 3,129.87 = 2,006.18 : x
2. Step 2: Convert to fraction form
   2,100.95/3,129.87 = 2,006.18/x
3. Step 3: Cross multiply
   2,100.95x = 3,129.87 × 2,006.18
4. Step 4: Simplify right side
   2,100.95x = 6,279,072.57
5. Step 5: Solve for x
   x = 6,279,072.57/2,100.95
6. Step 6: Final answer
   x = 2,988.68