Finding the Fourth Proportional to 1,385.91, 2,079.51 and 736.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.91 : 2,079.51 = 736.50 : x
2. Step 2: Convert to fraction form
   1,385.91/2,079.51 = 736.50/x
3. Step 3: Cross multiply
   1,385.91x = 2,079.51 × 736.50
4. Step 4: Simplify right side
   1,385.91x = 1,531,559.12
5. Step 5: Solve for x
   x = 1,531,559.12/1,385.91
6. Step 6: Final answer
   x = 1,105.09