Finding the Fourth Proportional to 2,101.67, 2,899.61 and 1,356.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.67 : 2,899.61 = 1,356.13 : x
2. Step 2: Convert to fraction form
   2,101.67/2,899.61 = 1,356.13/x
3. Step 3: Cross multiply
   2,101.67x = 2,899.61 × 1,356.13
4. Step 4: Simplify right side
   2,101.67x = 3,932,238.50
5. Step 5: Solve for x
   x = 3,932,238.50/2,101.67
6. Step 6: Final answer
   x = 1,871.01