Finding the Fourth Proportional to 1,103,667.65, 1,523,477.55 and 644,931.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103,667.65 : 1,523,477.55 = 644,931.32 : x
2. Step 2: Convert to fraction form
   1,103,667.65/1,523,477.55 = 644,931.32/x
3. Step 3: Cross multiply
   1,103,667.65x = 1,523,477.55 × 644,931.32
4. Step 4: Simplify right side
   1,103,667.65x = 982,538,379,694.48
5. Step 5: Solve for x
   x = 982,538,379,694.48/1,103,667.65
6. Step 6: Final answer
   x = 890,248.42