Finding the Fourth Proportional to 1,488.62, 2,051.91 and 1,173.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488.62 : 2,051.91 = 1,173.38 : x
2. Step 2: Convert to fraction form
   1,488.62/2,051.91 = 1,173.38/x
3. Step 3: Cross multiply
   1,488.62x = 2,051.91 × 1,173.38
4. Step 4: Simplify right side
   1,488.62x = 2,407,659.90
5. Step 5: Solve for x
   x = 2,407,659.90/1,488.62
6. Step 6: Final answer
   x = 1,617.38