Finding the Fourth Proportional to 1,089,111.78, 1,502,758.98 and 659,431.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089,111.78 : 1,502,758.98 = 659,431.62 : x
2. Step 2: Convert to fraction form
   1,089,111.78/1,502,758.98 = 659,431.62/x
3. Step 3: Cross multiply
   1,089,111.78x = 1,502,758.98 × 659,431.62
4. Step 4: Simplify right side
   1,089,111.78x = 990,966,788,650.95
5. Step 5: Solve for x
   x = 990,966,788,650.95/1,089,111.78
6. Step 6: Final answer
   x = 909,885.29