Finding the Fourth Proportional to 1,145,109.61, 1,717,723.51 and 292,188.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145,109.61 : 1,717,723.51 = 292,188.72 : x
2. Step 2: Convert to fraction form
   1,145,109.61/1,717,723.51 = 292,188.72/x
3. Step 3: Cross multiply
   1,145,109.61x = 1,717,723.51 × 292,188.72
4. Step 4: Simplify right side
   1,145,109.61x = 501,899,431,393.17
5. Step 5: Solve for x
   x = 501,899,431,393.17/1,145,109.61
6. Step 6: Final answer
   x = 438,298.16