Finding the Fourth Proportional to 1,666.83, 2,498.72 and 876.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.83 : 2,498.72 = 876.06 : x
2. Step 2: Convert to fraction form
   1,666.83/2,498.72 = 876.06/x
3. Step 3: Cross multiply
   1,666.83x = 2,498.72 × 876.06
4. Step 4: Simplify right side
   1,666.83x = 2,189,024.26
5. Step 5: Solve for x
   x = 2,189,024.26/1,666.83
6. Step 6: Final answer
   x = 1,313.29