Finding the Fourth Proportional to 1,131.35, 1,562.33 and 1,069.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.35 : 1,562.33 = 1,069.99 : x
2. Step 2: Convert to fraction form
   1,131.35/1,562.33 = 1,069.99/x
3. Step 3: Cross multiply
   1,131.35x = 1,562.33 × 1,069.99
4. Step 4: Simplify right side
   1,131.35x = 1,671,677.48
5. Step 5: Solve for x
   x = 1,671,677.48/1,131.35
6. Step 6: Final answer
   x = 1,477.60