Finding the Fourth Proportional to 1,666.90, 2,498.52 and 936.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.90 : 2,498.52 = 936.10 : x
2. Step 2: Convert to fraction form
   1,666.90/2,498.52 = 936.10/x
3. Step 3: Cross multiply
   1,666.90x = 2,498.52 × 936.10
4. Step 4: Simplify right side
   1,666.90x = 2,338,864.57
5. Step 5: Solve for x
   x = 2,338,864.57/1,666.90
6. Step 6: Final answer
   x = 1,403.12