Finding the Fourth Proportional to 2,547.12, 3,818.32 and 988.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,547.12 : 3,818.32 = 988.14 : x
2. Step 2: Convert to fraction form
   2,547.12/3,818.32 = 988.14/x
3. Step 3: Cross multiply
   2,547.12x = 3,818.32 × 988.14
4. Step 4: Simplify right side
   2,547.12x = 3,773,034.72
5. Step 5: Solve for x
   x = 3,773,034.72/2,547.12
6. Step 6: Final answer
   x = 1,481.29