Finding the Fourth Proportional to 1,184.69, 1,633.16 and 987.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.69 : 1,633.16 = 987.86 : x
2. Step 2: Convert to fraction form
   1,184.69/1,633.16 = 987.86/x
3. Step 3: Cross multiply
   1,184.69x = 1,633.16 × 987.86
4. Step 4: Simplify right side
   1,184.69x = 1,613,339.99
5. Step 5: Solve for x
   x = 1,613,339.99/1,184.69
6. Step 6: Final answer
   x = 1,361.82