Finding the Fourth Proportional to 1,100.42, 1,642.10 and 983.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.42 : 1,642.10 = 983.58 : x
2. Step 2: Convert to fraction form
   1,100.42/1,642.10 = 983.58/x
3. Step 3: Cross multiply
   1,100.42x = 1,642.10 × 983.58
4. Step 4: Simplify right side
   1,100.42x = 1,615,132.41
5. Step 5: Solve for x
   x = 1,615,132.41/1,100.42
6. Step 6: Final answer
   x = 1,467.74