Finding the Fourth Proportional to 1,113,123.78, 1,536,111.36 and 629,678.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,113,123.78 : 1,536,111.36 = 629,678.70 : x
2. Step 2: Convert to fraction form
   1,113,123.78/1,536,111.36 = 629,678.70/x
3. Step 3: Cross multiply
   1,113,123.78x = 1,536,111.36 × 629,678.70
4. Step 4: Simplify right side
   1,113,123.78x = 967,256,604,220.03
5. Step 5: Solve for x
   x = 967,256,604,220.03/1,113,123.78
6. Step 6: Final answer
   x = 868,956.91