Finding the Fourth Proportional to 1,160,337.79, 1,601,240.83 and 644,061.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160,337.79 : 1,601,240.83 = 644,061.34 : x
2. Step 2: Convert to fraction form
   1,160,337.79/1,601,240.83 = 644,061.34/x
3. Step 3: Cross multiply
   1,160,337.79x = 1,601,240.83 × 644,061.34
4. Step 4: Simplify right side
   1,160,337.79x = 1,031,297,314,632.51
5. Step 5: Solve for x
   x = 1,031,297,314,632.51/1,160,337.79
6. Step 6: Final answer
   x = 888,790.59