Finding the Fourth Proportional to 1,411,610.72, 2,116,225.16 and 612,290.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411,610.72 : 2,116,225.16 = 612,290.48 : x
2. Step 2: Convert to fraction form
   1,411,610.72/2,116,225.16 = 612,290.48/x
3. Step 3: Cross multiply
   1,411,610.72x = 2,116,225.16 × 612,290.48
4. Step 4: Simplify right side
   1,411,610.72x = 1,295,744,519,004.48
5. Step 5: Solve for x
   x = 1,295,744,519,004.48/1,411,610.72
6. Step 6: Final answer
   x = 917,919.15