Finding the Fourth Proportional to 1,875.13, 2,585.72 and 1,308.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.13 : 2,585.72 = 1,308.60 : x
2. Step 2: Convert to fraction form
   1,875.13/2,585.72 = 1,308.60/x
3. Step 3: Cross multiply
   1,875.13x = 2,585.72 × 1,308.60
4. Step 4: Simplify right side
   1,875.13x = 3,383,676.46
5. Step 5: Solve for x
   x = 3,383,676.46/1,875.13
6. Step 6: Final answer
   x = 1,804.50