Finding the Fourth Proportional to 1,401.12, 2,097.96 and 1,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.12 : 2,097.96 = 1,158.72 : x
2. Step 2: Convert to fraction form
   1,401.12/2,097.96 = 1,158.72/x
3. Step 3: Cross multiply
   1,401.12x = 2,097.96 × 1,158.72
4. Step 4: Simplify right side
   1,401.12x = 2,430,948.21
5. Step 5: Solve for x
   x = 2,430,948.21/1,401.12
6. Step 6: Final answer
   x = 1,735.00