Finding the Fourth Proportional to 1,864.23, 2,572.74 and 1,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,864.23 : 2,572.74 = 1,118.72 : x
2. Step 2: Convert to fraction form
   1,864.23/2,572.74 = 1,118.72/x
3. Step 3: Cross multiply
   1,864.23x = 2,572.74 × 1,118.72
4. Step 4: Simplify right side
   1,864.23x = 2,878,175.69
5. Step 5: Solve for x
   x = 2,878,175.69/1,864.23
6. Step 6: Final answer
   x = 1,543.90