Finding the Fourth Proportional to 2,978.07, 4,467.23 and 787.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.07 : 4,467.23 = 787.02 : x
2. Step 2: Convert to fraction form
   2,978.07/4,467.23 = 787.02/x
3. Step 3: Cross multiply
   2,978.07x = 4,467.23 × 787.02
4. Step 4: Simplify right side
   2,978.07x = 3,515,799.35
5. Step 5: Solve for x
   x = 3,515,799.35/2,978.07
6. Step 6: Final answer
   x = 1,180.56