Finding the Fourth Proportional to 1,543.98, 2,316.02 and 678.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.98 : 2,316.02 = 678.27 : x
2. Step 2: Convert to fraction form
   1,543.98/2,316.02 = 678.27/x
3. Step 3: Cross multiply
   1,543.98x = 2,316.02 × 678.27
4. Step 4: Simplify right side
   1,543.98x = 1,570,886.89
5. Step 5: Solve for x
   x = 1,570,886.89/1,543.98
6. Step 6: Final answer
   x = 1,017.43