Finding the Fourth Proportional to 1,409.50, 1,945.29 and 788.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.50 : 1,945.29 = 788.62 : x
2. Step 2: Convert to fraction form
   1,409.50/1,945.29 = 788.62/x
3. Step 3: Cross multiply
   1,409.50x = 1,945.29 × 788.62
4. Step 4: Simplify right side
   1,409.50x = 1,534,094.60
5. Step 5: Solve for x
   x = 1,534,094.60/1,409.50
6. Step 6: Final answer
   x = 1,088.40