Finding the Fourth Proportional to 1,521.82, 2,280.90 and 790.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.82 : 2,280.90 = 790.98 : x
2. Step 2: Convert to fraction form
   1,521.82/2,280.90 = 790.98/x
3. Step 3: Cross multiply
   1,521.82x = 2,280.90 × 790.98
4. Step 4: Simplify right side
   1,521.82x = 1,804,146.28
5. Step 5: Solve for x
   x = 1,804,146.28/1,521.82
6. Step 6: Final answer
   x = 1,185.52