Finding the Fourth Proportional to 1,588.70, 2,189.40 and 1,145.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.70 : 2,189.40 = 1,145.82 : x
2. Step 2: Convert to fraction form
   1,588.70/2,189.40 = 1,145.82/x
3. Step 3: Cross multiply
   1,588.70x = 2,189.40 × 1,145.82
4. Step 4: Simplify right side
   1,588.70x = 2,508,658.31
5. Step 5: Solve for x
   x = 2,508,658.31/1,588.70
6. Step 6: Final answer
   x = 1,579.06