Finding the Fourth Proportional to 1,547.31, 2,135.30 and 848.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,547.31 : 2,135.30 = 848.69 : x
2. Step 2: Convert to fraction form
   1,547.31/2,135.30 = 848.69/x
3. Step 3: Cross multiply
   1,547.31x = 2,135.30 × 848.69
4. Step 4: Simplify right side
   1,547.31x = 1,812,200.84
5. Step 5: Solve for x
   x = 1,812,200.84/1,547.31
6. Step 6: Final answer
   x = 1,171.19