Finding the Fourth Proportional to 1,097.84, 1,638.27 and 981.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.84 : 1,638.27 = 981.02 : x
2. Step 2: Convert to fraction form
   1,097.84/1,638.27 = 981.02/x
3. Step 3: Cross multiply
   1,097.84x = 1,638.27 × 981.02
4. Step 4: Simplify right side
   1,097.84x = 1,607,175.64
5. Step 5: Solve for x
   x = 1,607,175.64/1,097.84
6. Step 6: Final answer
   x = 1,463.94