Finding the Fourth Proportional to 1,870.17, 2,803.10 and 1,005.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.17 : 2,803.10 = 1,005.09 : x
2. Step 2: Convert to fraction form
   1,870.17/2,803.10 = 1,005.09/x
3. Step 3: Cross multiply
   1,870.17x = 2,803.10 × 1,005.09
4. Step 4: Simplify right side
   1,870.17x = 2,817,362.75
5. Step 5: Solve for x
   x = 2,817,362.75/1,870.17
6. Step 6: Final answer
   x = 1,506.47