Finding the Fourth Proportional to 1,062.03, 1,591.61 and 785.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.03 : 1,591.61 = 785.91 : x
2. Step 2: Convert to fraction form
   1,062.03/1,591.61 = 785.91/x
3. Step 3: Cross multiply
   1,062.03x = 1,591.61 × 785.91
4. Step 4: Simplify right side
   1,062.03x = 1,250,858.29
5. Step 5: Solve for x
   x = 1,250,858.29/1,062.03
6. Step 6: Final answer
   x = 1,177.80