Finding the Fourth Proportional to 1,823.16, 2,515.87 and 1,077.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,823.16 : 2,515.87 = 1,077.15 : x
2. Step 2: Convert to fraction form
   1,823.16/2,515.87 = 1,077.15/x
3. Step 3: Cross multiply
   1,823.16x = 2,515.87 × 1,077.15
4. Step 4: Simplify right side
   1,823.16x = 2,709,980.15
5. Step 5: Solve for x
   x = 2,709,980.15/1,823.16
6. Step 6: Final answer
   x = 1,486.42