Finding the Fourth Proportional to 1,748.08, 2,619.34 and 1,399.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,748.08 : 2,619.34 = 1,399.58 : x
2. Step 2: Convert to fraction form
   1,748.08/2,619.34 = 1,399.58/x
3. Step 3: Cross multiply
   1,748.08x = 2,619.34 × 1,399.58
4. Step 4: Simplify right side
   1,748.08x = 3,665,969.10
5. Step 5: Solve for x
   x = 3,665,969.10/1,748.08
6. Step 6: Final answer
   x = 2,097.14