Finding the Fourth Proportional to 2,100.16, 2,898.18 and 1,191.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.16 : 2,898.18 = 1,191.66 : x
2. Step 2: Convert to fraction form
   2,100.16/2,898.18 = 1,191.66/x
3. Step 3: Cross multiply
   2,100.16x = 2,898.18 × 1,191.66
4. Step 4: Simplify right side
   2,100.16x = 3,453,645.18
5. Step 5: Solve for x
   x = 3,453,645.18/2,100.16
6. Step 6: Final answer
   x = 1,644.47