Finding the Fourth Proportional to 1,437.69, 1,985.91 and 1,158.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.69 : 1,985.91 = 1,158.99 : x
2. Step 2: Convert to fraction form
   1,437.69/1,985.91 = 1,158.99/x
3. Step 3: Cross multiply
   1,437.69x = 1,985.91 × 1,158.99
4. Step 4: Simplify right side
   1,437.69x = 2,301,649.83
5. Step 5: Solve for x
   x = 2,301,649.83/1,437.69
6. Step 6: Final answer
   x = 1,600.94