Finding the Fourth Proportional to 1,091.78, 1,506.93 and 737.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,091.78 : 1,506.93 = 737.54 : x
2. Step 2: Convert to fraction form
   1,091.78/1,506.93 = 737.54/x
3. Step 3: Cross multiply
   1,091.78x = 1,506.93 × 737.54
4. Step 4: Simplify right side
   1,091.78x = 1,111,421.15
5. Step 5: Solve for x
   x = 1,111,421.15/1,091.78
6. Step 6: Final answer
   x = 1,017.99