Finding the Fourth Proportional to 1,086.15, 1,621.32 and 1,010.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.15 : 1,621.32 = 1,010.19 : x
2. Step 2: Convert to fraction form
   1,086.15/1,621.32 = 1,010.19/x
3. Step 3: Cross multiply
   1,086.15x = 1,621.32 × 1,010.19
4. Step 4: Simplify right side
   1,086.15x = 1,637,841.25
5. Step 5: Solve for x
   x = 1,637,841.25/1,086.15
6. Step 6: Final answer
   x = 1,507.93