Finding the Fourth Proportional to 1,153.98, 1,592.48 and 630

Step by Step Solution

1. Step 1: Write the proportion equation
   1,153.98 : 1,592.48 = 630 : x
2. Step 2: Convert to fraction form
   1,153.98/1,592.48 = 630/x
3. Step 3: Cross multiply
   1,153.98x = 1,592.48 × 630
4. Step 4: Simplify right side
   1,153.98x = 1,003,263.98
5. Step 5: Solve for x
   x = 1,003,263.98/1,153.98
6. Step 6: Final answer
   x = 869.39