Finding the Fourth Proportional to 1,333.82, 1,990.54 and 1,188.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.82 : 1,990.54 = 1,188.02 : x
2. Step 2: Convert to fraction form
   1,333.82/1,990.54 = 1,188.02/x
3. Step 3: Cross multiply
   1,333.82x = 1,990.54 × 1,188.02
4. Step 4: Simplify right side
   1,333.82x = 2,364,801.33
5. Step 5: Solve for x
   x = 2,364,801.33/1,333.82
6. Step 6: Final answer
   x = 1,772.95