Finding the Fourth Proportional to 1,558,978.35, 2,151,368.99 and 870,662.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558,978.35 : 2,151,368.99 = 870,662.47 : x
2. Step 2: Convert to fraction form
   1,558,978.35/2,151,368.99 = 870,662.47/x
3. Step 3: Cross multiply
   1,558,978.35x = 2,151,368.99 × 870,662.47
4. Step 4: Simplify right side
   1,558,978.35x = 1,873,116,233,833.13
5. Step 5: Solve for x
   x = 1,873,116,233,833.13/1,558,978.35
6. Step 6: Final answer
   x = 1,201,502.41