Finding the Fourth Proportional to 1,990.73, 2,985.86 and 530.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.73 : 2,985.86 = 530.00 : x
2. Step 2: Convert to fraction form
   1,990.73/2,985.86 = 530.00/x
3. Step 3: Cross multiply
   1,990.73x = 2,985.86 × 530.00
4. Step 4: Simplify right side
   1,990.73x = 1,582,488.22
5. Step 5: Solve for x
   x = 1,582,488.22/1,990.73
6. Step 6: Final answer
   x = 794.93