Finding the Fourth Proportional to 1,667.59, 2,498.65 and 1,179.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.59 : 2,498.65 = 1,179.77 : x
2. Step 2: Convert to fraction form
   1,667.59/2,498.65 = 1,179.77/x
3. Step 3: Cross multiply
   1,667.59x = 2,498.65 × 1,179.77
4. Step 4: Simplify right side
   1,667.59x = 2,947,816.87
5. Step 5: Solve for x
   x = 2,947,816.87/1,667.59
6. Step 6: Final answer
   x = 1,767.71