Finding the Fourth Proportional to 1,930.71, 2,664.72 and 1,091.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.71 : 2,664.72 = 1,091.45 : x
2. Step 2: Convert to fraction form
   1,930.71/2,664.72 = 1,091.45/x
3. Step 3: Cross multiply
   1,930.71x = 2,664.72 × 1,091.45
4. Step 4: Simplify right side
   1,930.71x = 2,908,410.88
5. Step 5: Solve for x
   x = 2,908,410.88/1,930.71
6. Step 6: Final answer
   x = 1,506.39