Finding the Fourth Proportional to 1,418.61, 1,957.52 and 788.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418.61 : 1,957.52 = 788.98 : x
2. Step 2: Convert to fraction form
   1,418.61/1,957.52 = 788.98/x
3. Step 3: Cross multiply
   1,418.61x = 1,957.52 × 788.98
4. Step 4: Simplify right side
   1,418.61x = 1,544,445.95
5. Step 5: Solve for x
   x = 1,544,445.95/1,418.61
6. Step 6: Final answer
   x = 1,088.70