Finding the Fourth Proportional to 1,802.31, 2,488.05 and 1,306.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,802.31 : 2,488.05 = 1,306.08 : x
2. Step 2: Convert to fraction form
   1,802.31/2,488.05 = 1,306.08/x
3. Step 3: Cross multiply
   1,802.31x = 2,488.05 × 1,306.08
4. Step 4: Simplify right side
   1,802.31x = 3,249,592.34
5. Step 5: Solve for x
   x = 3,249,592.34/1,802.31
6. Step 6: Final answer
   x = 1,803.02