Finding the Fourth Proportional to 1,930.59, 2,664.59 and 1,091.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.59 : 2,664.59 = 1,091.30 : x
2. Step 2: Convert to fraction form
   1,930.59/2,664.59 = 1,091.30/x
3. Step 3: Cross multiply
   1,930.59x = 2,664.59 × 1,091.30
4. Step 4: Simplify right side
   1,930.59x = 2,907,876.46
5. Step 5: Solve for x
   x = 2,907,876.46/1,930.59
6. Step 6: Final answer
   x = 1,506.21