Finding the Fourth Proportional to 1,084.86, 1,487.36 and 1,065.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,084.86 : 1,487.36 = 1,065.15 : x
2. Step 2: Convert to fraction form
   1,084.86/1,487.36 = 1,065.15/x
3. Step 3: Cross multiply
   1,084.86x = 1,487.36 × 1,065.15
4. Step 4: Simplify right side
   1,084.86x = 1,584,264.17
5. Step 5: Solve for x
   x = 1,584,264.17/1,084.86
6. Step 6: Final answer
   x = 1,460.34