Finding the Fourth Proportional to 1,156.05, 1,595.46 and 783.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.05 : 1,595.46 = 783.81 : x
2. Step 2: Convert to fraction form
   1,156.05/1,595.46 = 783.81/x
3. Step 3: Cross multiply
   1,156.05x = 1,595.46 × 783.81
4. Step 4: Simplify right side
   1,156.05x = 1,250,537.50
5. Step 5: Solve for x
   x = 1,250,537.50/1,156.05
6. Step 6: Final answer
   x = 1,081.73