Finding the Fourth Proportional to 1,699.31, 2,343.46 and 1,131.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,699.31 : 2,343.46 = 1,131.89 : x
2. Step 2: Convert to fraction form
   1,699.31/2,343.46 = 1,131.89/x
3. Step 3: Cross multiply
   1,699.31x = 2,343.46 × 1,131.89
4. Step 4: Simplify right side
   1,699.31x = 2,652,538.94
5. Step 5: Solve for x
   x = 2,652,538.94/1,699.31
6. Step 6: Final answer
   x = 1,560.95