Finding the Fourth Proportional to 1,513.89, 2,088.99 and 1,164.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.89 : 2,088.99 = 1,164.78 : x
2. Step 2: Convert to fraction form
   1,513.89/2,088.99 = 1,164.78/x
3. Step 3: Cross multiply
   1,513.89x = 2,088.99 × 1,164.78
4. Step 4: Simplify right side
   1,513.89x = 2,433,213.77
5. Step 5: Solve for x
   x = 2,433,213.77/1,513.89
6. Step 6: Final answer
   x = 1,607.26