Finding the Fourth Proportional to 2,100.32, 3,147.38 and 1,869.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.32 : 3,147.38 = 1,869.65 : x
2. Step 2: Convert to fraction form
   2,100.32/3,147.38 = 1,869.65/x
3. Step 3: Cross multiply
   2,100.32x = 3,147.38 × 1,869.65
4. Step 4: Simplify right side
   2,100.32x = 5,884,499.02
5. Step 5: Solve for x
   x = 5,884,499.02/2,100.32
6. Step 6: Final answer
   x = 2,801.72