Finding the Fourth Proportional to 1,495.14, 2,238.59 and 1,128.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,495.14 : 2,238.59 = 1,128.81 : x
2. Step 2: Convert to fraction form
   1,495.14/2,238.59 = 1,128.81/x
3. Step 3: Cross multiply
   1,495.14x = 2,238.59 × 1,128.81
4. Step 4: Simplify right side
   1,495.14x = 2,526,937.13
5. Step 5: Solve for x
   x = 2,526,937.13/1,495.14
6. Step 6: Final answer
   x = 1,690.10