Finding the Fourth Proportional to 759,705.48, 1,047,367.60 and 487,300.46

Step by Step Solution

1. Step 1: Write the proportion equation
   759,705.48 : 1,047,367.60 = 487,300.46 : x
2. Step 2: Convert to fraction form
   759,705.48/1,047,367.60 = 487,300.46/x
3. Step 3: Cross multiply
   759,705.48x = 1,047,367.60 × 487,300.46
4. Step 4: Simplify right side
   759,705.48x = 510,382,705,595.76
5. Step 5: Solve for x
   x = 510,382,705,595.76/759,705.48
6. Step 6: Final answer
   x = 671,816.54