Finding the Fourth Proportional to 1,418.31, 1,957.26 and 788.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.31 : 1,957.26 = 788.82 : x
2. Step 2: Convert to fraction form
   1,418.31/1,957.26 = 788.82/x
3. Step 3: Cross multiply
   1,418.31x = 1,957.26 × 788.82
4. Step 4: Simplify right side
   1,418.31x = 1,543,925.83
5. Step 5: Solve for x
   x = 1,543,925.83/1,418.31
6. Step 6: Final answer
   x = 1,088.57