Finding the Fourth Proportional to 1,103,667.03, 1,523,476.71 and 644,930.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103,667.03 : 1,523,476.71 = 644,930.78 : x
2. Step 2: Convert to fraction form
   1,103,667.03/1,523,476.71 = 644,930.78/x
3. Step 3: Cross multiply
   1,103,667.03x = 1,523,476.71 × 644,930.78
4. Step 4: Simplify right side
   1,103,667.03x = 982,537,015,274.75
5. Step 5: Solve for x
   x = 982,537,015,274.75/1,103,667.03
6. Step 6: Final answer
   x = 890,247.68