Finding the Fourth Proportional to 1,495.43, 2,065.64 and 1,139.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,495.43 : 2,065.64 = 1,139.18 : x
2. Step 2: Convert to fraction form
   1,495.43/2,065.64 = 1,139.18/x
3. Step 3: Cross multiply
   1,495.43x = 2,065.64 × 1,139.18
4. Step 4: Simplify right side
   1,495.43x = 2,353,131.37
5. Step 5: Solve for x
   x = 2,353,131.37/1,495.43
6. Step 6: Final answer
   x = 1,573.55