Finding the Fourth Proportional to 1,931.51, 2,665.50 and 1,146.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.51 : 2,665.50 = 1,146.08 : x
2. Step 2: Convert to fraction form
   1,931.51/2,665.50 = 1,146.08/x
3. Step 3: Cross multiply
   1,931.51x = 2,665.50 × 1,146.08
4. Step 4: Simplify right side
   1,931.51x = 3,054,876.24
5. Step 5: Solve for x
   x = 3,054,876.24/1,931.51
6. Step 6: Final answer
   x = 1,581.60