Finding the Fourth Proportional to 1,180.02, 1,629.30 and 787.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.02 : 1,629.30 = 787.98 : x
2. Step 2: Convert to fraction form
   1,180.02/1,629.30 = 787.98/x
3. Step 3: Cross multiply
   1,180.02x = 1,629.30 × 787.98
4. Step 4: Simplify right side
   1,180.02x = 1,283,855.81
5. Step 5: Solve for x
   x = 1,283,855.81/1,180.02
6. Step 6: Final answer
   x = 1,087.99