Finding the Fourth Proportional to 1,790.64, 2,470.50 and 1,161.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,790.64 : 2,470.50 = 1,161.99 : x
2. Step 2: Convert to fraction form
   1,790.64/2,470.50 = 1,161.99/x
3. Step 3: Cross multiply
   1,790.64x = 2,470.50 × 1,161.99
4. Step 4: Simplify right side
   1,790.64x = 2,870,696.30
5. Step 5: Solve for x
   x = 2,870,696.30/1,790.64
6. Step 6: Final answer
   x = 1,603.17