Finding the Fourth Proportional to 1,180.67, 1,764.05 and 1,139.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.67 : 1,764.05 = 1,139.81 : x
2. Step 2: Convert to fraction form
   1,180.67/1,764.05 = 1,139.81/x
3. Step 3: Cross multiply
   1,180.67x = 1,764.05 × 1,139.81
4. Step 4: Simplify right side
   1,180.67x = 2,010,667.31
5. Step 5: Solve for x
   x = 2,010,667.31/1,180.67
6. Step 6: Final answer
   x = 1,703.00