Finding the Fourth Proportional to 2,131.60, 3,197.76 and 1,035.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.60 : 3,197.76 = 1,035.88 : x
2. Step 2: Convert to fraction form
   2,131.60/3,197.76 = 1,035.88/x
3. Step 3: Cross multiply
   2,131.60x = 3,197.76 × 1,035.88
4. Step 4: Simplify right side
   2,131.60x = 3,312,495.63
5. Step 5: Solve for x
   x = 3,312,495.63/2,131.60
6. Step 6: Final answer
   x = 1,553.99