Finding the Fourth Proportional to 1,915.46, 2,642.76 and 1,159.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.46 : 2,642.76 = 1,159.59 : x
2. Step 2: Convert to fraction form
   1,915.46/2,642.76 = 1,159.59/x
3. Step 3: Cross multiply
   1,915.46x = 2,642.76 × 1,159.59
4. Step 4: Simplify right side
   1,915.46x = 3,064,518.07
5. Step 5: Solve for x
   x = 3,064,518.07/1,915.46
6. Step 6: Final answer
   x = 1,599.89