Finding the Fourth Proportional to 1,931.10, 2,664.76 and 1,091.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.10 : 2,664.76 = 1,091.88 : x
2. Step 2: Convert to fraction form
   1,931.10/2,664.76 = 1,091.88/x
3. Step 3: Cross multiply
   1,931.10x = 2,664.76 × 1,091.88
4. Step 4: Simplify right side
   1,931.10x = 2,909,598.15
5. Step 5: Solve for x
   x = 2,909,598.15/1,931.10
6. Step 6: Final answer
   x = 1,506.71