Finding the Fourth Proportional to 1,665.82, 2,499.74 and 925.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.82 : 2,499.74 = 925.99 : x
2. Step 2: Convert to fraction form
   1,665.82/2,499.74 = 925.99/x
3. Step 3: Cross multiply
   1,665.82x = 2,499.74 × 925.99
4. Step 4: Simplify right side
   1,665.82x = 2,314,734.24
5. Step 5: Solve for x
   x = 2,314,734.24/1,665.82
6. Step 6: Final answer
   x = 1,389.55