Finding the Fourth Proportional to 918,111.15, 1,286,684.24 and 918,111.15

Step by Step Solution

1. Step 1: Write the proportion equation
   918,111.15 : 1,286,684.24 = 918,111.15 : x
2. Step 2: Convert to fraction form
   918,111.15/1,286,684.24 = 918,111.15/x
3. Step 3: Cross multiply
   918,111.15x = 1,286,684.24 × 918,111.15
4. Step 4: Simplify right side
   918,111.15x = 1,181,319,142,682.72
5. Step 5: Solve for x
   x = 1,181,319,142,682.72/918,111.15
6. Step 6: Final answer
   x = 1,286,684.24