Finding the Fourth Proportional to 1,457.89, 2,196.56 and 1,319.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,457.89 : 2,196.56 = 1,319.24 : x
2. Step 2: Convert to fraction form
   1,457.89/2,196.56 = 1,319.24/x
3. Step 3: Cross multiply
   1,457.89x = 2,196.56 × 1,319.24
4. Step 4: Simplify right side
   1,457.89x = 2,897,798.60
5. Step 5: Solve for x
   x = 2,897,798.60/1,457.89
6. Step 6: Final answer
   x = 1,987.67