Finding the Fourth Proportional to 1,875.02, 2,815.05 and 998.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,875.02 : 2,815.05 = 998.30 : x
2. Step 2: Convert to fraction form
   1,875.02/2,815.05 = 998.30/x
3. Step 3: Cross multiply
   1,875.02x = 2,815.05 × 998.30
4. Step 4: Simplify right side
   1,875.02x = 2,810,264.42
5. Step 5: Solve for x
   x = 2,810,264.42/1,875.02
6. Step 6: Final answer
   x = 1,498.79