Finding the Fourth Proportional to 3,588.04, 5,381.34 and 991.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,588.04 : 5,381.34 = 991.12 : x
2. Step 2: Convert to fraction form
   3,588.04/5,381.34 = 991.12/x
3. Step 3: Cross multiply
   3,588.04x = 5,381.34 × 991.12
4. Step 4: Simplify right side
   3,588.04x = 5,333,553.70
5. Step 5: Solve for x
   x = 5,333,553.70/3,588.04
6. Step 6: Final answer
   x = 1,486.48